Develop Bugs

Cameron Sino Extended Battery - Review

Thought I would write a quick review of the extended battery I just bought.
Background
I was rather unhappy with my original battery as were most people! It only lasted me a day and as my job requires me to be out and about a lot, plus to call people often, I thought something more robust would be better. My solution = The Cameron Sino 2600mAH Battery!
Initial Impressions
The battery is twice the size of stock. The battery cover did not close on my phone. Total size isnt too bad. It nearly doubles the phone thickness, but when I come onto the testing section later this is a worthwhile sacrifice.
Cover Fit
The cover didnt fit so I decided to buy a 32gb micro sd card (which works fine), and to super glue the cover on. I figured that using a scalpel I could remove the back (I tested and it works fine) if ever required. Hopefully I wont need to access it ever, or until I upgrade in 18 months and decide to sell it.
Performance
After charging to 100%, running down to 0% 3 times, I have now had the phone on for 5 days and it's current charge level is 10%. As you can see this is awesome. My settings:
Helix Launcher
Wifi On about an hour a day
Light phone calls (around 5 hours)
Light texting - 20 odd a day
3g Off
GPS off
I imagine in real life conditions 3 days moderate use would be obtainable.
Conclusion
Overall I am very very happy with this battery. It really brings this phone into the "worthwhile for daily use" category (it should have been here originally ofcourse). Hopefully will be able to use the standard UI rather than Helix when 2.1 comes out. Damn app power leaks.
Rating: 4/5 (Battery door a poor fit)
Edit: Forgot to mention at £16.99 delivered (amazon.co.uk), you can hardly go wrong!!!

Could you post a pic of your phone now please?

Unfortunately my only camera is my phone...... sorry. Maybe someone else can!?

Wow! I assume you like your phone carrier since it is difficult now to remove the sim card.

Well my carrier (Three) used to be terrible. However they appear to have upgraded their cell towers and I now have full signal most places that my friends dont! So yeah I like my carrier!

Why dont you buy the extra thick covers that are all over ebay so that you dont have to glue anything?
Edit: My bad they arent on ebay, but there is a thread in the accessories forum, I'm sure of it.

theres a couple of posts and reviews in a thread on here already and myself and several others paid just £12.99 free postage from ebay

Yeah I rarely buy off ebay - had a lot of problems with sellers before (might just be my luck ). I saw the other reviews, and just wanted to do my own hehe.

any chance to get a pic of your phone? how it looks with the glued cover?

If i ma not wrong, that battery comes with a cover for X10 right? Are u saying that that cover that they provide does not fit properly?

Mine fits properly. You just have to force the sides of the cover into place and thats it. Battery life is much better than the oem one and has a very noticeable difference.

ordered one from http://www.megacapacity.com/26985.html . Lets see how it goes

Just updating this thread for potential cameron sino battery buyers. I got the package 4 days ago. I removed my stock battery, popped this battery in, used the back cover that was provided by them. The phone became almost twice the depth thanx to the battery.
Then the issues started. Even though the green light used to come on when connected to the mains, the phone never used to start. Initially i thought the charge is low, so left it overnight, but then the next morning i saw tht I still had the same issue. After fidgeting with it for sometime, i noticed that there is a 1(or 0.5) mm gap between the battery and contacts because of which the x10 did not start. I used a thin plastic sheet(amost like a sheet of paper) to hold the battery up against the contact and it worked fine. Right now the problem is that if i shake the phone a bit vigorously, it gets disconnected because of the shorter battery.
But i want to see how the battery lasts so am using it for now. It all boils down to the time i have to wait till next charge. If it really gives around 70% more time (as claimed by many in other forums) i will use it despite the bulkiness and the smaller battery issues. Thanx for reading!!!

so this comes with a case as well for £12.99?

Khimera said:
Just updating this thread for potential cameron sino battery buyers. I got the package 4 days ago. I removed my stock battery, popped this battery in, used the back cover that was provided by them. The phone became almost twice the depth thanx to the battery.
Then the issues started. Even though the green light used to come on when connected to the mains, the phone never used to start. Initially i thought the charge is low, so left it overnight, but then the next morning i saw tht I still had the same issue. After fidgeting with it for sometime, i noticed that there is a 1(or 0.5) mm gap between the battery and contacts because of which the x10 did not start. I used a thin plastic sheet(amost like a sheet of paper) to hold the battery up against the contact and it worked fine. Right now the problem is that if i shake the phone a bit vigorously, it gets disconnected because of the shorter battery.
But i want to see how the battery lasts so am using it for now. It all boils down to the time i have to wait till next charge. If it really gives around 70% more time (as claimed by many in other forums) i will use it despite the bulkiness and the smaller battery issues. Thanx for reading!!!
Click to expand...
Click to collapse
Thanks for this info! I was having the same issue with this battery. I thought I was having a driver issue for extended batteries but after reading your post, I confirmed that it wasnt the case. Fixed the problem but with a different approach.
What I did was I soldered a small amount of lead onto the contacts on the battery (careful enough not to short the contacts) so that it would give better contact on pins of the x10.. I know the process seems a little bit drastic but it works! I can't make the phone shutdown even when I shook the hell out of this phone.

peedee888 said:
Thanks for this info! I was having the same issue with this battery. I thought I was having a driver issue for extended batteries but after reading your post, I confirmed that it wasnt the case. Fixed the problem but with a different approach.
What I did was I soldered a small amount of lead onto the contacts on the battery (careful enough not to short the contacts) so that it would give better contact on pins of the x10.. I know the process seems a little bit drastic but it works! I can't make the phone shutdown even when I shook the hell out of this phone.
Click to expand...
Click to collapse
Thanx man!!! I was doubting if only I had the issue. Your plan of soldering seems a permanent fix Will try that when i get time

http://www.amazon.co.uk/Cameron-Sin...321O/ref=sr_1_5?ie=UTF8&qid=1302209543&sr=8-5
dont know if its just been discounted but its down to £14.99 (from £16.99 OP) on amazon uk.

rojdag said:
http://www.amazon.co.uk/Cameron-Sin...321O/ref=sr_1_5?ie=UTF8&qid=1302209543&sr=8-5
dont know if its just been discounted but its down to £14.99 (from £16.99 OP) on amazon uk.
Click to expand...
Click to collapse
still expensive !!
to quote myself
kmaximax said:
theres a couple of posts and reviews in a thread on here already and myself and several others paid just £12.99 free postage from ebay
Click to expand...
Click to collapse

kmaximax said:
still expensive !!
to quote myself
Click to expand...
Click to collapse
not really, i stupidly bought a mugen 1800mah for 33usd! at least it fits properly though.

awsome!!!
5 DAYS!!!!!
awsome, I was planning to sell the phone because of the battery, unfourtionatly I live in sudan and there is no way to buy stuff online here!

Wireless Charger?

Has there been any word on that rumored wireless charger for the GSIII from Samsung?
Are there any worthy 3rd party wireless chargers?

No. Samsung pretty much keeps pushing it off from what I heard. Buttttttt, I think some Chinese or Japanese group made a modified back cover for the S3 so it's compatible with a wireless charge station. The group sells them on ebay I believe. You'd have to go find it and what not I don't know price or anything like that
Edit: there seems to be a bunch on ebay that are receivers which you take off the back, and attach it in, put the cover back on, and then apparently your good to go. I don't see any specific group who made them but there's several all around $20-30. There was a post around here on the same thing.
Sent from my SPH-L710 using xda app-developers app

The guy here
http://forum.xda-developers.com/showthread.php?t=2176396
Bought one for the verizon variant and modded his phone slightly to make it work, didnt sound like it was a full teardown process or very difficult either

There's a lot more simple ones than that.. they attach inside the battery cover (the back of the phone you pop off to access the sd card, and battery).
Pretty much if you take off the back and look on the left side by the battery is 2 little copper looking squares or w/e, thats for a wireless charging receiver.
http://www.ebay.com/itm/Samsung-Gal...457715?pt=PDA_Accessories&hash=item2324a21673
All you gotta do with that, is take off your stock battery cover, and put that one on, and then set it on a dock. Due to it somewhat covering part of the back of the phone, (not visually from the outside), it may interfere with NFC/S beam. Im not sure about that though.

Questions go in Q&A
You may also keep an eye in the accessories subforum
Thread moved
Friendly Neighborhood Moderator

Here you go. Great option for me cuz the wife used to have a Palm Pre.

Without some way to suppress alert tone, wireless charging is a bust
ReapersDeath said:
There's a lot more simple ones than that.. they attach inside the battery cover (the back of the phone you pop off to access the sd card, and battery). All you gotta do with that, is take off your stock battery cover, and put that one on, and then set it on a dock. Due to it somewhat covering part of the back of the phone, (not visually from the outside), it may interfere with NFC/S beam. Im not sure about that though.
Click to expand...
Click to collapse
The NFC antenna is in the battery, so the wireless charging solutions that involve covering the battery (like the one you linked to on eBay) definitely will prevent you from using NFC.
I took the Verizon OEM wireless back (available on eBay) which has the second NFC antenna below the battery (i.e. NFC still works) and did a 10 minute mod so that my Sprint phone would accept it. I'm still a noob, so I can post links, but Google for "How to EASILY Add Inductive/Wireless Charging to your Sprint Phone Using Verizon Cover & Keeping NFC" and is the first link

My journey to a deteriorating USB port fix

Hi guys,
I had my Gnex for more than a year and thought I was one of the lucky ones without USB wake problems. That is, the USB port thinks it's being plugged in or unplugged causing the screen to turn on and subsequently kill your battery. Unfortunately, I started noticing the phone turn on occasionally. Then, it progressively got worse over the course of about 6 weeks to the point where it had to be plugged in several times a day.
One of the tricks that helped in the short-term was to move nudge/coax the contacts in the port in an upward direction. So, with your phone facing up insert something very thin (ideally plastic or paper-based) between the bottom of the port housing and the nipple thing that sticks out that has all the copper contacts on it. There is almost zero room, so you'll need to search for a suitable tool. Once you put a bit of pressure in an upward direction for a few moments you'll find your phone doesn't wake up at all, or as much. Unfortunately, that only helped for a while.
I'm not sure what the cause of problem is. I hypothesize that corrosion occurred when I left my phone in the washroom while I had a steamy shower every day for a few months, but who knows.
I found no suitable software workarounds.
I didn't want to junk the phone, so I ordered a replacement part for only $5.99 + shipping. You can find the part here: Witrigs. Given the price, I suggest you order two. I don't recall the shipping, but it wasn't expensive. Delivery was around 7 days to Canada (from Hong Kong). Website is definitely legit. Maybe add some other parts to your order, if you feel so inclined.
The install wasn't too bad. I'm a dummy and thought I would skip steps that I didn't think were necessary, like removing my sim card. Don't skip steps! The iFixit instructions I followed don't seem to be around anymore. There are guides on YouTube etc that are helpful but they make it look way too easy. Expect to struggle with removal of the screen from the casing. Be careful when you're jamming around into the edges because there are many delicate sensors and buttons which can be broken. Credit cards work well. Overall it's safe, just use your common sense.
Overall, the replacement wasn't too bad. Unfortunately, the replacement part was IDENTICAL to the outgoing port. I was hoping there was a revision, but no dice. I'm glad I bought the second replacement port, just in case I have the same problem in the future.
Anyways, I did this a few months ago and am trying to remember the best I can. I hope this might help somebody.

MikeMurphy said:
Anyways, I did this a few months ago and am trying to remember the best I can. I hope this might help somebody.
Click to expand...
Click to collapse
Thanks for sharing your experience,MO and advices; I can remember several that had the issue and some fix it by just working around the usb port with a suitable tool, others tried to replace the part without sucess, and others with sucess;
Offtopic: I think this thread belongs in General, no question here. Reported.

Replaced my charging port + flex board yesterday. Ordered the replacement from Aliexpress for $3.something and free shipping! Took around 2 weeks to reach me, but the part works perfectly and you can get faster delivery by paying for express delivery.
The iFixit guide is still there:
1. http://www.ifixit.com/Teardown/Samsung+Galaxy+Nexus+Teardown/7182/1
2. http://www.ifixit.com/Guide/Repairi...+LTE)+Micro+USB+Charge+Port+&+Main+Mic/9641/1
Also looked at various youtube videos before I finally undertook the replacement.
Cheers to everyone who fixed their own phones!!

HTC one mophie case problems

This will be my third case I will be returning to best buy. Two of mine (black) one of my wife's (silver). All of them having the same problem.
Randomly stops charging.
Won't charge.
Won't show indicator battery leds.
until I plug and then unplug the case then it's back to normal.
I emailed mophie on the issue since I couldn't find any similar issues on Google and asked them what I can do to prevent it or what I am possibly doing wrong.
They just send me an automated response telling me to file for a warranty claim.
So here I am asking if anybody else has the same issue I do and if they found a work around or any information. Right now it's just a really expensive phone case and the fact that I have to plug it in to activate it defeats the purpose of an external battery case.
Thanks for your help.
Sent from my HTCONE using Tapatalk 2

mmmtacos said:
This will be my third case I will be returning to best buy. Two of mine (black) one of my wife's (silver). All of them having the same problem.
Randomly stops charging.
Won't charge.
Won't show indicator battery leds.
until I plug and then unplug the case then it's back to normal.
I emailed mophie on the issue since I couldn't find any similar issues on Google and asked them what I can do to prevent it or what I am possibly doing wrong.
They just send me an automated response telling me to file for a warranty claim.
So here I am asking if anybody else has the same issue I do and if they found a work around or any information. Right now it's just a really expensive phone case and the fact that I have to plug it in to activate it defeats the purpose of an external battery case.
Thanks for your help.
Sent from my HTCONE using Tapatalk 2
Click to expand...
Click to collapse
There are two other threads in this forum about the mophie case already, both of which describe this issue (I returned mine for good because of it). There doesn't seem to be a real fix for it: there are just apparently a whole lot of bad units.

I have gone through 3 cases all with the same issue. I am headed back for case number 4 later today.

My first one had this issue. Got it replaced and the one I have now works perfectly.
Sent from my iPad using Tapatalk

Yeah it's REALLY annoying. I've gone through 3 cases myself and the problem never resolved itself. The only way I can use this case is if I never put on the top, which is stupid but I deal with it because I don't want to carry an external battery. Has anyone pulled off the top plastic power button and have it still work?

limache said:
Yeah it's REALLY annoying. I've gone through 3 cases myself and the problem never resolved itself. The only way I can use this case is if I never put on the top, which is stupid but I deal with it because I don't want to carry an external battery. Has anyone pulled off the top plastic power button and have it still work?
Click to expand...
Click to collapse
That's how I fixed the first one I had before I decided to exchange it. It works fine but it becomes annoying to push the power button on and off with it recessed like that.
Sent from my iPad mini Retina

I Ordered One From There Site Around $60 When it Come To My Door They Wanted And Extra £37.00 For Handling So I Rejected It, The Bloke Told Me At Morphie I Will Get A Refund For It Once The Item Has Been Received Back, 4 Month Later I Submitted A Support Ticket Asking If Had Been Received Yet, Then They Replied With The Exuse That They Do Not Receive Items Back They just Get Abandoned, So Now I'm Roughly £50.00 Down And No Case

same issues here
I am about to return my second Mophie juice pack for the HTC One. I am having exactly the same issues; the juice pack randomly "forgets" it's charged and ceases to function, unless I plug it into a power source, at which point it "wakes up" again, but then it will stop working AGAIN before it has even used all its charge. What's ironic is that I have been a huge fan of Mophie products for the iPhone, having bought several of them for my wife's phone, and they've never had issues like this.
Mophie really needs to come clean and issue a press release explaining that the juice pack for HTC One is faulty, and they should issue return labels to EVERYONE who has bought one, as a gesture of good faith. Many other companies out there are catching up to Mophie with battery cases of their own, that are of inherently better build quality. Sorry Mophie but you stepped in it this time.
mmmtacos said:
This will be my third case I will be returning to best buy. Two of mine (black) one of my wife's (silver). All of them having the same problem.
Randomly stops charging.
Won't charge.
Won't show indicator battery leds.
until I plug and then unplug the case then it's back to normal.
I emailed mophie on the issue since I couldn't find any similar issues on Google and asked them what I can do to prevent it or what I am possibly doing wrong.
They just send me an automated response telling me to file for a warranty claim.
So here I am asking if anybody else has the same issue I do and if they found a work around or any information. Right now it's just a really expensive phone case and the fact that I have to plug it in to activate it defeats the purpose of an external battery case.
Thanks for your help.
Sent from my HTCONE using Tapatalk 2
Click to expand...
Click to collapse

As you can see from my previous posts my Mophie case was working fine for me............until I updated to 4.3. I am now having the same issue stated by many of you. It randomly forgets it's charged until I connect it back to power and then sometimes it just completely loses all charge and needs to be recharged. Seems it isn't a hardware issue but some sort of glitch brought upon by specific OS versions.
Sent from my iPad mini Retina

duncanjohnston1 said:
I am about to return my second Mophie juice pack for the HTC One. I am having exactly the same issues; the juice pack randomly "forgets" it's charged and ceases to function, unless I plug it into a power source, at which point it "wakes up" again, but then it will stop working AGAIN before it has even used all its charge. What's ironic is that I have been a huge fan of Mophie products for the iPhone, having bought several of them for my wife's phone, and they've never had issues like this.
Mophie really needs to come clean and issue a press release explaining that the juice pack for HTC One is faulty, and they should issue return labels to EVERYONE who has bought one, as a gesture of good faith. Many other companies out there are catching up to Mophie with battery cases of their own, that are of inherently better build quality. Sorry Mophie but you stepped in it this time.
Click to expand...
Click to collapse
jlczl said:
As you can see from my previous posts my Mophie case was working fine for me............until I updated to 4.3. I am now having the same issue stated by many of you. It randomly forgets it's charged until I connect it back to power and then sometimes it just completely loses all charge and needs to be recharged. Seems it isn't a hardware issue but some sort of glitch brought upon by specific OS versions.
Sent from my iPad mini Retina
Click to expand...
Click to collapse
I realize this won't help much immediately anyway.
But the Verizon HTC One just got its' 4.3 update.
It does not include Sense 5.5, it's only Sense 5.0, but to get to my point:
One of the fixes in that OTA's changleog, was a fix for the Mophie Juice Pack.
So it would appear that HTC is aware of the issue and I would assume any OTA's that come from here on will include whatever fixes they are now implementing to reduce these issues.
Just thought I'd pass along that info for whatever it's worth.

That's the update that broke my Mophie.
Sent from my iPad mini Retina

jlczl said:
That's the update that broke my Mophie.
Sent from my iPad mini Retina
Click to expand...
Click to collapse
Oh I assumed you were on a different carrier based on your signature...my bad.
As not all updates of the same Android version are the same across variants.

This is a conforting thread to see here, being that I have just ordered mine and it is coming in monday.
If MHL dosent work with the thing on, i will probably return it. I think i saw someone confirm that it wont work on Android Central Forums- I hope they are wrong.
EDIT: confirmed... The mophie case does not work with MHL.. I guess they were to cheep to add the 4 extra pins to the damn case.. I'm sure the iPhone version has all 32 pins on it

santod040 said:
I realize this won't help much immediately anyway.
But the Verizon HTC One just got its' 4.3 update.
It does not include Sense 5.5, it's only Sense 5.0, but to get to my point:
One of the fixes in that OTA's changleog, was a fix for the Mophie Juice Pack.
So it would appear that HTC is aware of the issue and I would assume any OTA's that come from here on will include whatever fixes they are now implementing to reduce these issues.
Just thought I'd pass along that info for whatever it's worth.
Click to expand...
Click to collapse
I'm using a T-Mobile HTC One that already has Android 4.3. But that's beside the point; the issue is with the Juice pack, not the phone or its software version. The juice pack "forgets" its charge when not even in use (power button turned off), therefore it has no interplay with the phone's software, so the problem is not related to phone software version.
Oh and FYI I'm now on my FOURTH HTC One Juice pack from Mophie, and it too is faulty. I did an online chat with Mophie tech support and all they did was issue yet ANOTHER return label, and did not acknowledge any awareness of this issue occurring with other HTC One Juice pack owners. So we have the corporate mentality at work, which is to say "never admit that your product is faulty."

duncanjohnston1 said:
I'm using a T-Mobile HTC One that already has Android 4.3. But that's beside the point; the issue is with the Juice pack, not the phone or its software version. The juice pack "forgets" its charge when not even in use (power button turned off), therefore it has no interplay with the phone's software, so the problem is not related to phone software version.
Oh and FYI I'm now on my FOURTH HTC One Juice pack from Mophie, and it too is faulty. I did an online chat with Mophie tech support and all they did was issue yet ANOTHER return label, and did not acknowledge any awareness of this issue occurring with other HTC One Juice pack owners. So we have the corporate mentality at work, which is to say "never admit that your product is faulty."
Click to expand...
Click to collapse
I've had 3 bad ones that I picked up from AT&T. I stopped at Verizon and all of theirs worked perfect. The AT&T ones had extremely short connectors, the ones at Verizon had connectors the same length as the connector on the USB cable. The difference was clearly obvious.

Possible HTC One mophie solution
Hello all,
I have read all three threads on the mophie issue for the HTC One, as I was having the same issue with my new mophie; not charging or intermittently charge, top was hard to push on, and mine even seemed to have the micro usb connector misaligned. Seems as though something was not connected correctly internally on the mophie. I decided to take apart my mophie case and found that the male micro usb connector that connected to the phone had a broken plastic support bracket which cause my intermittent issue. If you are somewhat mechanically inclined and do not care about the mophie warranty, here are the steps that I took to fix my mophie:
Tools needed: Flat tip and Philips jewelers screw drivers, double sided tape, super glue (or gorilla glue), double sides tape, and some non metallic spacer (I used tape folded over a couple times)
1) Slide the flat tip in between the 2 lays of plastic and pry them apart carefully, I started by the mophie's camera hole for the HTC one and worked my way towards the other end.
NOTE: You might here some popping and cracking, this is due to the ultrasonic bonding process used.
NOTE: When prying toward the micro usb with the flat tip be aware that the battery starts just below the camera opening.
2) Once both pieces feel separated pull firmly on the plastic that has the mophie serial number, try pulling different direction, understand that some resistance will be there due to the double sides tap between the plastic and the battery.
3) Once battery is fully exposed pull battery out slightly to release double sided tap on the back side of the battery, while simultaneously pulling micro usb toward the top or camera opening of the mophie case.
4) Locate micro usb plastic support bracket, removed 2 Phillips screws to access bracket.
NOTE: At this point is when I had to repair the plastic bracket in mind with some gorilla glue. Be mindful that unless u want more work u still have to work with the usb connected to the circuit board.
5) Reinstall phillip screws and place spacer between plastic bracket and micro usb.
6) Following steps 1-4 in reverse.
My mophie works like a champ now! And the tope even fits without having to force it! Hope this help someone else out. Please see atched pics for clarification purposes.

My first mophie works perfeclty and has no flaws. Wish I had that luck with my phone LOL.

SOLUTION
Hey guys! So, I disected my case to see if I could manually fix the problem and I figured out what the problem was. The little micro USB inside the case is getting pushed inside and so when you try to plug in your phone it never fully plugs in.
So, the easiest solution would be to take a pair of pliers and very CAREFULLY shimmying the USB plug out. Then, it should work like a charm.
Also, to prevent this from happening from the future, when you insert your HTC One into the case push down the bottom part of your phone to insure that it slides onto the plug without pushing it down again.
And just another problem I experienced with this case was the built in power button. I found it was pressing in my pocket and also when I put the top part of the case down the power button would stay pressed. I simply sanded the bottom part of the built in button down and that fixed it.
HOPE THIS HELPS!

Recommended Replacement Battery?

Can anyone recommend a good quality cheap replacement battery from somewhere like aliexpress or ebay? Asking if anyone has made good experiences with one they ordered. I know I can find many that have good reviews online, but often they degrade quite quickly after purchase.
Thank you!

Apparently you can find one easily sold by Huawei itself. Then you can follow the tutorial on iFixit.com to replace it.
On amazon, enter hb366481ecw in the search form.

Recently replaced batteries on two Huawei P9 phones, buying them from Aliexpress:
https://www.aliexpress.com/item/LEH...097.html?spm=a2g0s.9042311.0.0.237b4c4ddW53r4
https://www.aliexpress.com/item/NOH...424.html?spm=a2g0s.9042311.0.0.237b4c4ddW53r4
Both batteries work well, and came with basic tools you will need for replacement.
Search on Google for demos how to replace battery on Huawei P9, use also iFixit guide as mentioned before:
https://www.ifixit.com/Guide/Huawei+P9+Battery+Replacement/77706
Upon replacing, for the first 3-5 times, always fully discharge and fully recharge.
For the next 10-15 days pay attention always to fully recharge.
After that, new battery will be shaped and phone will learn statistics for that new battery.
Tools coming with batteries include small and practically useless vacuum suction cups. This was the only problem I faced when trying to open my P9, and also when I was trying to pull out its battery.
Hence, before I was going to replace battery on the second phone, I purchased powerful suction cups:
https://www.aliexpress.com/item/Min...522.html?spm=a2g0s.9042311.0.0.237b4c4ddW53r4
With them, it really worked like a charm (I should have them - but unfortunately did not, when I was similarly opening two other phones in my previous life, Meizu and Xiaomi)

So far I made quite good experience withe the brand "Extreme Cells".
https://extremecells.de/
They seem to use quality cells.
While ordering "original" replacement it is always hard to distinguish between real or fake...