relation between sim card and battery drain - Windows Phone 7 General

ever since updating to the new mango, I experienced battery drain on my hd7.finally I narrowed down to one single cause - sim card.
when I first got my windowsphone, I am using the the old sim card which is 2 years old which was what i got from Telco for my iPhone 3g. IPhone 3g is more than 2 years old.
What i did was i replace my sim card with my sister's Omnia 7 and her sim card is just a month old which she got with her phone.
After using her sim card, i put back my own sim card . And the battery drain disappeared. Asked one of my frens who work in telco service support and he told me apparently my hd7 "learnt" new values OTA from my sister's newer sim card
he claims that the phone downloads software for sim over the air to update optimized for newer hspa networks.
now the battery seems a bit better. And. Does not drain in sleep mode.
I suggest those with poor battery life to try this method.of course it will be better if u got a brand new sim card from your telco

your experience with the new HSPA network will be directly affected with these phones and the old 3G sims, . It only makes sense that when the new network was implimented that a new sim would be part of this puzzle. The sim is your only connection to the network, so I'm totally perplexed as to why this is even in question. The reason you are seeing such high battery drain rates is because the old sim is not connecting to the network properly.
In this case the iPhone 3g sim card does not seems to be optimized for newer network technologies.

Related

[Q] New Sim Card

I recently purchased a G2 and was wondering if there is any benifit in activating the new simcard? I live in an area where 3G is everywhere but inside the city limits. I used to work at At&t way back when it was Cingular and I briefly remeber telling people something about upgrading to the 64 or 128 bit simcard (can't remember for sure). I have been using the same simcard for two+ years. If I travel to area's outside the city, I can use 3G speeds.
Your Knowledge is greatly appriciated.
slim
Why not?
You have nothing to loose!
...and I'm nearly certain it doesn't give you any extra benefit; I've had my SIM Since, the T-Mo Wing[?]
& Its still Going Strong!
Just replace it the sim technolgy has been the same for several years but if its real old the new 4g network might suffer a bit but still won't be to bad but it comes with a new one so just update it. Make sure that you back up any contacts you may have saved on it first though
Sent from my HTC Vision using XDA App
I called a T-mo rep about it and he said the sim cards have a expeiry date based on network transitions. He told me to activate the new sim simply because it was able to "recognize" more available bandwidth and that it did not expire from transitioning from umts,hsdpa,and hspa+ quickly where as he said mine would. (I find this bogus because my voicestream SIM card still worked)
Sent from my HTC Vision using XDA App
I personally think that T-Mo are talking BS. I'd be happy to be wrong if someone can provide proof that they're actually correct on this issue.
Actually its probably best. I checked my old sim card with the new sim card and the copper connector on the back is different from the new and old sim cards. Plus after activating the new one, I didn't have hiccups transfering from E to 3G to H whereas before it would randomly drop from H to E. But thats for me.

HTC One X - Terrible Terrible signal reception

I'm absolutely baffled that I'm the only one apparently suffering from this.
At first it was ok, now, no matter what ROM or base, the signal quality is terrible.
Where my HTC Sensation was getting full bars, or constant HSDPA (I rarely ever seen 3G), this One X is either getting 3G, G or E, which means no web pages will load or anything, very terrible.
It's making me consider "downgrading to upgrade", because the only time I can browse the net happily is either very close to Wi-Fi source, or where HSDPA is very strong, so I will just about get HSDPA then.
Other people must be suffering from this?????
The only plus with the One X is in my village I find it easier to get 1-2 bars and a bit of G.
Thanks.
Talk Mobile??? What's their coverage like?
Do you know what your Radio is? Try flashing a few different radio's to see if that helps?
Talk Mobile is on the Vodaphone network.
I've never attempted to flash a different radio, in fact I've never even seen a list of radios, as far as I knew they were included in the actual ROMs now.
willhub said:
Talk Mobile is on the Vodaphone network.
Click to expand...
Click to collapse
I didn't know that
willhub said:
I've never attempted to flash a different radio, in fact I've never even seen a list of radios, as far as I knew they were included in the actual ROMs now.
Click to expand...
Click to collapse
Afaik some of the Devs have access to different radio's, Try asking Mike1986 from ARHD or Football to see if they can help you.
I'm sure that I've seen some threads about flashing different radios to fix signal problems before, I think to see Mike1986 posting about it when I used to frequent the HTC Sensation's Android Development threads.
Hi
willhub said:
I'm absolutely baffled that I'm the only one apparently suffering from this.
At first it was ok, now, no matter what ROM or base, the signal quality is terrible.
Where my HTC Sensation was getting full bars, or constant HSDPA (I rarely ever seen 3G), this One X is either getting 3G, G or E, which means no web pages will load or anything, very terrible.
It's making me consider "downgrading to upgrade", because the only time I can browse the net happily is either very close to Wi-Fi source, or where HSDPA is very strong, so I will just about get HSDPA then.
Other people must be suffering from this?????
The only plus with the One X is in my village I find it easier to get 1-2 bars and a bit of G.
Thanks.
Click to expand...
Click to collapse
It is probably a hardware fault with the phone. If your HTC Sensation is getting a good signal with the same SIM/network provider, and your HTC One X isn't, then I suspect a fault, perhaps internal antenna connection issues that have plagued Wi-Fi. Try gently squeezing the phone with your thumb over the home key and fingers underneath and see if reception improves.
There is also an internal cable that may not have been attached correctly in the phone to the antenna, either way it is back for a repair.
I can't see way a software would be to blame.
Regards
Phil
I have the same issue. I will use my warranty
Castellano2 said:
I have the same issue. I will use my warranty
Click to expand...
Click to collapse
Some old Sim card have problems
If you have a old 3 or 5 Sim card its the problem , they are different and have have bad reception with new phones, with MicroSIM slot
i have to change my SIM card at vodafone and ask for a new one ...
Because my sim card is old and i cut it to micro sim but have bad signal
with new microSim card the problem as been solved
masrterk said:
Some old Sim card have problems
If you have a old 3 or 5 Sim card its the problem , they are different and have have bad reception with new phones, with MicroSIM slot
i have to change my SIM card at vodafone and ask for a new one ...
Because my sim card is old and i cut it to micro sim but have bad signal
with new microSim card the problem as been solved
Click to expand...
Click to collapse
Why a old sim product a bad signal ??
How strange !!!
htc 51 said:
Why a old sim product a bad signal ??
How strange !!!
Click to expand...
Click to collapse
vodafone replace my old SIM card for a new one
and the reception problem has been solved
Because the micro chip of old sim cards and different and they work if cutted for micro sim but very bad
old Sim cards are not ready for micro sim phones
New micro sim cards have a smaller "chip" and the y have a better 3G reception
problem solved
masrterk said:
vodafone replace my old SIM card for a new one
and the reception problem has been solved
Because the micro chip of old sim cards and different and they work if cutted for micro sim but very bad
old Sim cards are not ready for micro sim phones
New micro sim cards have a smaller "chip" and the y have a better 3G reception
problem solved
Click to expand...
Click to collapse
I'm using the micro SIM that was provided.
The signal reception bars are never really different, it's just the phones inability to hold a decent HSDPA connection, constantly flicking from 3G, G and E, so I'm loading a website on HSDPA, as soon as it flicks to 3G, loading stops because the connection is far too slow.
I do have the Wi-Fi issue, if the signal is not full on, so I'm a bit away from the router, the wireless is just cutting out all the time, was not like this with HTC Sensation.
I don't really know about getting it sent in for repair I won't have a phone then!
If you get 3G, then you get H, they are the same technology.
What you will find, however, is that the One X supports fast dormancy, so the data connection will sit on 3G until H is needed, then switch, then drop back to 3G when it's not.
you guys tried flashing different radios?
Is it fast dormancy causing the problems then? How can I disable it?
I can't flash different radios as it's very hard to find different radios for the One X
Apparently you have to to change the build.prop to disable it:
ro.ril.fast.dormancy.rule=0
Hi
masrterk said:
vodafone replace my old SIM card for a new one
and the reception problem has been solved
Because the micro chip of old sim cards and different and they work if cutted for micro sim but very bad
old Sim cards are not ready for micro sim phones
New micro sim cards have a smaller "chip" and the y have a better 3G reception
problem solved
Click to expand...
Click to collapse
The SIM card doesn't control reception, that is a myth. The SIM card is just like the chip in your credit card, it holds a number and some data to identify you to the mobile phone network.
The problems a self cut or old SIM my cause is that it doesn't connect very well to the phone, this means your phone thinks the SIM card has been removed and gives you "No Service" or Emergency only calls.
The only other time the SIM card may make you think it is affecting reception and giving you a lower signal is if you are roaming and it you don't have an up to date roaming list, usually though this is updated over the air anyway, a new SIM card may allow you to roam onto nearer cells so you see a better signal.
A bad SIM will not knock a couple of a bars off your reception, in the same way a bad credit card doesn't give you less credit limit.
Regards
Phil
Rusty! said:
Apparently you have to to change the build.prop to disable it:
ro.ril.fast.dormancy.rule=0
Click to expand...
Click to collapse
How do I do this?
http://bit.ly/O4EL9H
Sent from HTC One X
Download and flash another radio from here : http://forum.xda-developers.com/showthread.php?t=1689679
Try getting radio from ur region or ruu..
Next get this app : https://play.google.com/store/apps/details?id=com.sibbor.getril
Get a matching ril to radio u installed from.this app..download & install
See if this makes the difference..
Sent from my HTC One X using Tapatalk 2
try OpenSignalMaps from the market to see what's really going on (click on 'map' for example will show what cell you're connected to and signal strength etc)
I tried that OpenSignalMaps, I notice how my phone is connecting to some nearby towers, but I live near a place called Selby, and it's connecting to masts in Leeds????

Dual-Sim issue

I got this rather strange problem/issue with my G5. The 2nd SIM Slot it seems is not that consistent when it comes to network signal. I started noticing this when I put it my Roaming SIM on the 2nd slot, and there are times that it will randomly lose/gain signal strength and the network will totally disconnect. Then I have to again manually configure the network settings. That's when I decided to swap the sims I'm using. The Roaming sim works flawlessly on the 1st slot, while the local sim on the 2nd slot does the same, but so far haven't disconnected from the network, or at least once I noticed it totally lost signal for a second before going back to normal.
Is this normal for the Moto G5? This is something I can't argue with the store from where I got it from since the SIM is accepted and read by the 2nd SIM Tray.
The Moto G5 with Motorola firmware is currently being mis-sold, it is not really dual-SIM as you expect, the second SIM is more an internal storage location - you can switch to it but not use both properly at the same time. When connected with 4g to the first SIM the second is set to the obsolete and not available in many areas 2g. I have found that disabling the first sim is not good enough to allow the second to use 4g, you also have to set the second sim as the primary data SIM. The Moto app suggests you can choose which SIM for data or individual calls, guess it might work if your second SIM network is 2g only?According to report from Australia Motorola are aware of the issue and are looking into it - no 2g signal at all in areas over there. Elsewhere you may have patchy 2g signal and see the old data connections E or H popping up. Apparently older Moto G4 etc can use 3g at same time in second slot, not sure if the G5 issue is fixable by firmware or is some crazy hardware design fault. Don't hold your breath waiting for updates - Android 7.0 with January security update is latest here - while phone still under warranty!

Unlocked N9750 Dual Sim Mobile Network Connection issues with TMobile SIM installed

Hello,
I just purchased an unlocked Note10+ N9750 Dual Sim in Taiwan, and I am currently located in Taiwan. The phone is on the latest SOFTWARE update from September 1st. ...ASI3.
When I put 2 Taiwanese SIM cards in the phone, the mobile internet works flawlessly and is extremely fast (About 200/50 on each network) when selecting SIM1 or SIM2 for mobile internet, with WiFi disabled. I can switch the cards and it works as expected.
The icons usually show 4G+, although it can sometimes slip into 4G for 10-20 seconds or so.
However, when putting my Tmobile SIM card into SIM1 or SIM2 along with a Taiwanese SIM card, and selecting the Taiwanese SIM card for mobile DATA (The goal here is to use the Taiwanese SIM card for data when in Taiwan), the mobile data is extremely slow (Around 2/0.5).
Furthermore, most of the time, when trying to access the internet, it appears that the phone is trying to connect for the first 5-10 seconds before actually bringing back internet data.
This can be with an app, like Whatsapp, or a simple Google search, or a speed test.
The icons will show 4G+ or 4G, not sure there is a pattern here.
I have tried everything I could think of with roaming ON/OFF, moving the SIM cards around, etc.
APN for Tmobile is correct and setup for IPV4/6 for normal, and IPV4 for roaming.
Again, if I simply replace the Tmobile SIM card with another Taiwanese provider (2 Taiwanese SIM cards installed), the internet is super fast and instantaneous on either SIM card.
The Tmobile SIM is working as expected in a Note9 TMobile Single SIM.
Not sure if anybody has some insight on what may be going on here...
Coming from a Note9 and the Tmobile SIM is less than 1 year old if I recall.
Thank you.
I forgot to mention that if I go into the SIM DEVICE MANAGER with both a Taiwanese SIM card and the TMOBILE SIM card installed and disable the TMOBILE SIM, the internet works fast as expected on the Taiwanese SIM.
As soon as I re-enable the TMOBILE SIM card, the internet is slow again and takes 5-10 seconds before bringing data back from a Google search, etc...
That's because if you are overseas with T-Mobile it caps data speeds I believe at 256kpbs.
I'm guessing the order of the Sim somehow maybe coming into play . Also generally second sim position will give you Lower speeds
Hello Joogle,
I should have mentioned that I have the 15GB pass from Tmobile, so 4G speeds while roaming up to 15GB. The speed when on the Tmobile card is very fast, 50/10 or so.
This is not the issue I believe.
Does 2nd position really give slower speeds? I did not know that.
Interestingly, I am in China at the moment and put a Hong Kong SIM card in slot #2 with my TMOBILE SIM in slot#1. Selected sim#2 for data, and everything works great and is always fast.
Not sure what to make out of that.
Preferred Network is set to: LET/TD-SCDMA/UMTS.
A bit confused by all the options of 4G SWITCHER.
Well, I found out that if I put my TMOBILE SIM in 3G/2G mode only, and leave the Taiwan SIM card at 4G/3G/2G, everything works great and fast with no delay...
This is fine since 3G is good enough for phone calls and text messages.

Connectivity problem USA carriers

Hi everyone!
I've surfed all I've found here about Xiaomi Mi A2 Lite and the bands/carrier problems here in the USA, but I can't solve my problem. Here are the facts:
I have a Xiaomi Mi A2 Lite Global Version, Android 10 updated, not flashed, not root, works perfect and I love it.
I moved to USA from Spain 1 month ago, I got a new SIM from T-Mobile and the first two days worked, but suddenly lost the connection, not only data but calls and messages.
If I change that SIM with another one, (also T-Mobile, my boyfriend bought it the same day, same plan), then it works again but after some hours not signal again.
I've been doing this SIM change over the last 2 weeks, but it is really uncomfortable, I've tried to get a pattern but it doesn't depend on the time that the SIM is on the phone (it can be operative 2 hours or 2 days) nor in the data used or in the area.
When I lost the signal, the SIM is recognized but is like I was inside a deep cave with no coverage.
There is no way to recover the signal, I've tried airplane mode, rebooting several times, reinserting SIM, port change, even changing the SIM and changing it back, but nothing.
When I have signal I get T-Mobile 4G LTE and runs smoothly.
My SIM ports are fine because both read my Spanish SIM card, and the SIMs cards work perfectly because my bf can use both.
I don't know if is a network compatibility problem, he has a POCO X3 that supports the same bands and he gets signal all the time.
I bought a new SIM card from Mint just to check if it was about the carrier, and It does not work either, even when the phone compatibility says that should work.
I'm stuck now
Any advice? Should I buy a new phone to live in the states? (I'm going to be here for a year and I'm spending so much money on moving in that I would prefer not)
Thank you in advance!

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