Develop Bugs

havin' sim issues...

i just got my dash and it is actin strangely. it keeps goin between phone & flight mode and it sometimes turns off the phone function or says...''sim failure, sim card may be invalid or missing''. please help as i am getting irritable without my fone.

Maybe the SIM card has somehow become wet or unseated. Remove it, wipe it down with a soft cloth, and reinsert it. The problems may go away.

Take a pencil eraser and rub the SIM card contacts on the phone and SIM card itself.

thanks alot guys...
big thanks for the eraser tip. it still does it occasionally but i can use my phone again... thanks

ohhh booooyyyy....
it's at it again but the eraser thing wont even work so i'm back to square one.... and i tried to use the eraser on the sim contacts on the phone but i can't reach them to do it as they are behind this metal strip which i guess holds the card to the contacts. i did notice that the same metal strip is also soldered to the board, could there be another use? i was wondering if it was able to tell that the card was there via this bracket as well as by the pins on the sim port, if so maybe it was loose or something?(just stabbing at ideas)

Wolfdragon said:
says...''sim failure, sim card may be invalid or missing''. please help as i am getting irritable without my fone.
Click to expand...
Click to collapse
I once had this, I did a hard reset and that solved the problem. Make sure to backup your data first.

why dont you try another sim card form a friend or something.
like that you can determine where the problem is coming form.

[Q] Micro-sd slot spring loaded?

Bit of a weird question, but I recently bought a Desire with serial number HT09 and the micro-sd slot was just an interference fit, and I had to pick the card out with my nail.
This phone has just been replaced due to rebooting issues and the new phone I received from t-mobile has s/n HT08. This phone has a spring loaded micro-sd slot, so I just have to push the card in to eject it.
This to me seems like better attention to detail, I just wonder why they changed it?
Was it maybe made in a different factory?
Cheers, Rich.

the first few weeks I had mine (HT05) I was picking the card out with my finger nail but then the spring 'sprung' into life and now I push down to remove it, so I can only guess that they all have springs fitted and that some work properly and some dont

The HT04 lot are fine.... cant see thay would take the spring away ... it's still very fidderly to get the card out... far too small !!!!!!!

Sim card tray damaged. Best way to fix?

I have a tendency to hop back and forth between phones. Today I went to put my sim card in my Note 2. I use a nano sim card adaptor (I decided to experiment with the iPhone 5 for about a month...) to put my sim card in my Note 2 and my Nexus 4. Unfortunately, the sim card fell out while I was putting it in my Note 2 today and the adaptor got stuck in the tray. After a few moments of agonizing struggle, I got the adapter out. Now my Note 2 won't recognize my sim card. I think the prongs at the entrance of the slot were damaged, since that's where the adaptor kept getting hung up.
Is there a way to find out if it's completely broken or if the prongs are just out of place? And if it's broken, does anyone know how much a repair would cost? I don't know that I have the confidence to try to repair it myself.
Thanks.
Sent from my Nexus 4 using Tapatalk 2

The SIM card reader module I'm fairly certain is soldered onto the logic board, so unless your good with soldering, a replacement SIM reader isnt very practical. However, the Sprint Epic Touch (GS2) sd card reader module is attached only by a simple flex cable, so its possible the same may apply here. If this were the case, the replacement part shouldnt cost more than 10-20$ (assuming their available) and replacement would be as hard as taking the back housing off.
Try comparing the SIM slot with another similar model and see if you can see if something is out of place. See see see see see see.:good:

I think I may have done the same to mine with one of those SIM adapters. I've ordered this and it should be here in a few days. I'll give it a go...
http://www.ebay.com/itm/OEM-Samsung...271792?pt=PDA_Accessories&hash=item1c313e9ef0

u did the same exact thing i did lol but what i thought was a damaged sim tray was somehow just corruted firmware when i restored back to stock everything worked just fine i even called samsung and they were going to replace it but since i live in Hawaii i didnt want to wait so i just did a restore in odin and everything works fine
if u are really damaged ur stim tray and dont wanna wait on samsung u can try this
http://www.youtube.com/watch?v=UT-2zrZ_aNo
but good luck try restoring with odin first

I'm glad I'm not the only one to have had this problem, heh heh.
Anyway, after watching the video, I think I'm going to send my Note to Samsung and have them fix it. I would probably ruin my phone if I did it myself. Should I do a factory reset to protect my data before doing so? I don't know if they'll be sending the same phone back to me, since it says they may replace it with another if they determine that they aren't going to fix the part that's broken.

blackplague1347 said:
I'm glad I'm not the only one to have had this problem, heh heh.
Anyway, after watching the video, I think I'm going to send my Note to Samsung and have them fix it. I would probably ruin my phone if I did it myself. Should I do a factory reset to protect my data before doing so? I don't know if they'll be sending the same phone back to me, since it says they may replace it with another if they determine that they aren't going to fix the part that's broken.
Click to expand...
Click to collapse
they will wipe ur data if ur rooted and have a custom rom on your phone u need to return to stock and set the flash counter to zero.
u would send the phone is no battery no battery cover no sim card so sd card just the phone nothing else
try to restore ur phone via odin first
http://galaxynote2root.com/galaxy-n...ootunbrick-galaxy-note-2-with-stock-firmware/
if u still get no sim card error after doing that then give samsung a call phone number is on the phone itself under battery and they will send u a box and u should have to wait about 2 weeks then u will either get a fixed phones or a replacement not sure how they do it since i fixed my no sim issue with odin

I did the same thing once. Just called att and told them it wasn't reading a simple anymore and they sent me a new one.
Sent from my GT-N7105 using Tapatalk 2

My Fix For Broken SIM Reader Pin
This is an old thread, I know. But the problem is ongoing. These SIM card adapters are just plain evil. Now that this has happened to me, I googled the issue and see that there are tons of folks suffering. I am posting this reply so that others can see the "fix" I managed for my International Samsung Note I. I am sure it can be applied to most other phones.
I should point out that in order to get any usable access to and visibility of the SIM card reader I had to remove the battery cover and the back from the phone's touchscreen. This reveals the motherboard to which the SIM card reader is soldered. I found a good video on this at YouTube. It wasn't that hard although I did not have the plastic pry bar they used - I think I will get one for the future. I managed with a small flat head jewelers screw driver and an ancient, plastic shirt collar stay. (I can hear my mother saying "save it - you'll find a use for it!" I hate it when she is right.) Once complete I could move on.
At first, I tried to replace the SIM card reader pin that was broken off by the SIM card adapter with a tiny piece or rolled-up tin foil. I saw someone else reference this approach and it seemed possible and cheap. Alas, it did not work. After many attempts, the phone simply would not recognize any SIM card. I finally got to sleep at 3am.
I then found a piece of brass shim stock that I have had lying around for years. (I am hearing mom again!) It is item 1412110231, Brass Strip .016x1/2inx12in shown here. I got mine at the local hardware store for some other aborted project. I used some snips to cut off a tiny strip from one end and then cut that strip to maybe 1/3 to 1/2 its overall length. The idea was to place the strip inside the SIM reader slot where the pin had broken off in an effort to create a contact point to replace the pin. Cutting the tiny strip off the stock piece caused the tiny strip to bow a bit. It turns out that was a good thing but I had to reduce the amount of bow quite a bit for it to fit inside the reader. Remove any rough edges from the tiny strip with a file.
With the touchscreen assembly lying flat on the table I managed to get the tiny strip in place. I was then able to slowly and carefully slide the SIM card into the reader and this resulted in a contact good enough to make the phone again recognize the SIM card and for cell service to be restored. Hurray! Yes, I was able to carefully place the battery in its bay and operate the power button to perform testing.
But you must remain aware that the tiny strip is just lying in the slot and is held in place only by friction/pressure from the SIM card inserted into the reader. Therefore, for the rest of the phone's life, it requires great care when removing the SIM and handling the phone when a SIM is not installed . Basically when removing the SIM, the phone MUST remain flat on its display until the SIM is re-installed. Moving the phone around in other orientations without a SIM card installed will definitely cause the tiny strip fall out. And who knows what hell that will cause?
You cannot put the phone's back onto the touchscreen with the SIM card in place. At first I thought about cutting the SIM's length down so the back would install even with the SIM in place. Before doing this I tried to carefully snap the top portion of the back onto the touchscreen while it all remained flat on the table so the tiny strip wouldn't move. With the top 1/3 of the back snapped on, I could just manage to insert the SIM through the phone's cover and have the tiny strip held in place by the SIM while I snapped the rest of the back into position. This worked pretty well but your mileage may vary.
I basically plan to leave the SIM in place forever - even if it is not to be used. I also put a reminder note on the battery so that I am less likely to forget that I made this hack.
I hope the annotated photos help those who follow me - as surely others will do. Good luck. I was very lucky to have destroyed only one pin and for it to be in the most accessible part of the SIM reader.

Invalid Sim / Searching / No sim card error that is not the Sim card

Since Monday I have problems with the SIM card bring recognised. It does one of 3 things. It times down from 10 saying no sim card and then it restarts. When it comes back on this repeats till you take the battery out. Or it will say searching instead of network or it will say the network then suddenly it will switch to invalid sim.
I tried putting paper in the sim tray and ruled out a sim tray problem that way. I put my boyfriends sim into my phone and the same thing happened. I put my sim into my boyfriends phone and it works fine.
It may be unrelated but there is a software update that keeps coming up but the install keeps failing
And saying verification failed after restarting the device after download. I have no idea how to fix this sim problem.
Thanks in advance.
Android version 6.0
Secrutiy patch level 2016-07-01
Baseband version MPSS.DI.2.0.1.c1.13.00114-M8974AAAAANPZM-1.43646.2
Kernel version 3.4.0
Build no MRA58K
Software D85130e
Security software MDFv1.1 release 2

Sim Card Fix
The repair I did should never have been necessary. LG decided not to use any heat sink interface material between the main CPU/PCB and the heatsink. So when the phone gets older, things start loosening from all the expansion and contraction of these parts leading to sim card disconnections, and probably other problems.
Remove back cover, carefully disconnect the ribbon cables, remove main circuit board. Apply one piece of thermal adhesive heat transfer tape so that it covers the back of the board where it makes contact with the silver heatsink, making sure you remove the plastic film from both sides of the tape. This tape is about 1.5-2 mm thick, a perfect fit! I also added a small piece to the back edge of the sim card before I put the battery back in just to keep it from moving. You may not need to do this.
Since I installed it my phone hasn't worked like this since the day I first got it. Everything works perfectly and the phone doesn't get hot like it used to.
Hope this works for you,
James L.
Some stuff like this: https://www.ebay.com/itm/NEW-3M-881...h=item2c904ea163:g:4CYAAOSw6YtZXbW-:rk:1:pf:0

Question Problem with constant reboots

I have been experiencing constant reboot, i have tried to logcat them but everytime i try the logcat stops working about 5 minutes before and only starts working again after a reboot.
the phone also shows a negative charge cycle of over -14 milion.
the phone is not overheating and changing custom roms doesnt help. even stock miui has the same problem.
if anyone knows something that could fix the problem it would be greatly appreciated.
thanks

There's a thread on that here,
https://forum.xda-developers.com/t/random-reboot-random-freeze.4491095/
Although it seems to still be a mystery.
TL;DR
Try some Compressed air inside the ejected Sim card slot / don't use your case for a few days to let phone air out. Seems to have helped me, no problems for a few weeks now

I will try, thank you

Zinnz said:
There's a thread on that here,
https://forum.xda-developers.com/t/random-reboot-random-freeze.4491095/
Although it seems to still be a mystery.
TL;DR
Try some Compressed air inside the ejected Sim card slot / don't use your case for a few days to let phone air out. Seems to have helped me, no problems for a few weeks now
Click to expand...
Click to collapse
Did you experience the same problem?

cyanGalaxy said:
Did you experience the same problem?
Click to expand...
Click to collapse
Yes, I experienced this about 3 weeks ago.
To the best of my knowledge, (hoping someone with more of a technical background can shine some light if i am wrong) I think it's moisture build up.
The only thing I found that made my phone work normally again, was to eject my Sim card tray, and shoot Compressed air into the empty slot for about 20 seconds.
My train of thought, is that the phone isn't very water resistant. I also now try to regularly use my phone without my case once and awhile.

I think it could be either moisture or dust, maybe even both.
also thanks again Zinnz, my phone works perfectly again, i might just take off the back if it starts happening again just to find out whats causing it.

Update: started happening again to my phone, so I curiously swapped mine and my gfs Sim cards. Her iPhone booted up perfectly fine, and so did my poco. Both with full networking.
I took some paper towel and made it flat and took some rubbing alcohol and soaked it somewhat and gave the inside of the Sim card tray a decent cleaning, and cleaned my Sim card with rubbing alcohol too.
I'm leaning towards the sim card going bad, as it's getting up in age (6years) and from what I've read, many off glitches can occur when your Sim card starts going.
I also wonder if the act of inserting another carriers sim card in my phone restarted some things software wise needed for cell service, like switched it to CDMA or something odd like that.
Anyway sorry for the long winded update
Update: problem still persists after getting a new Sim card.
If anyone has any ideas what could be causing this please share