Started phone and Keep Searching for Sim Box Appears - AT&T Samsung Galaxy S7 Questions & Answers

Started my phone this morning and get this box saying it will restart so I check OK. But never goes away. Is this a Sim problem or what? I have the 930U firmware installed in it but have never had this problem before. Phone is Unlocked. Any ideas??

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[Q] No SIM card

I just connected my galaxy s5 to Kies, and updated Lollipop to my phone. Now when I start the phone, it first connects me to the network, but in about 30 seconds it drops me off. It's like the phone suddenly doesn't recognize my sim card?
There's not anyone with similar issue?
I finally found the answer myself. If someone has same kind of issue, the answer is to update new bootloader and modem with odin. That did the trick and now everything rocks again =)

[Q] EE sim not working in unlocked S4 Invalid Sim

Every type of sim works in my Samsung Galaxy S4 i9505 apart from EE sims. I have been back and forth with EE on the phone and to my local store and no-on knows what the issue is.
The phone is unlocked and was working fine with my (UK) T Mobile sim. Apparently the only difference between T Mobile and EE sims is the 4G part. Interestingly, a contract EE sim returns the message "Invalid Sim". A pay as you go EE sim returns the message "No Sim". My local EE store think this is a software issue rather than hardware.
Unlocked Samsung Galaxy S4
EE PAYG brings up "No Sim" error
EE contract sim brings up "Invalid Sim" error
All other networks' sims work fine
The IMEI is not blacklisted or blocked on EE
I have done a factory reset
AP: I9505XXUHOB7
CP: I9505XXUHOB7
CSC: I9505BTUHOB4
The problem is that I bought the phone off contract so EE cannot do anything and the warranty has expired. Has anyone ever heard of this problem before, and does anyone have any ideas as to what I could do next??
tomedwards93 said:
Every type of sim works in my Samsung Galaxy S4 i9505 apart from EE sims. I have been back and forth with EE on the phone and to my local store and no-on knows what the issue is.
The phone is unlocked and was working fine with my (UK) T Mobile sim. Apparently the only difference between T Mobile and EE sims is the 4G part. Interestingly, a contract EE sim returns the message "Invalid Sim". A pay as you go EE sim returns the message "No Sim". My local EE store think this is a software issue rather than hardware.
Unlocked Samsung Galaxy S4
EE PAYG brings up "No Sim" error
EE contract sim brings up "Invalid Sim" error
All other networks' sims work fine
The IMEI is not blacklisted or blocked on EE
I have done a factory reset
AP: I9505XXUHOB7
CP: I9505XXUHOB7
CSC: I9505BTUHOB4
The problem is that I bought the phone off contract so EE cannot do anything and the warranty has expired. Has anyone ever heard of this problem before, and does anyone have any ideas as to what I could do next??
Click to expand...
Click to collapse
Since I can't think of any other reason as to why it wouldn't work. Try updating the Modem and BL.
What you should do is, remove the SIM.
Download the XXUHOB8 Modem and Bootloader.
Flash them.
Let the phone boot up.
Do a HARD reset.
Insert the SIM.
Then check.
Thanks to @Repulsa for providing us with the OB8 modem and BL.
Here's the link for the GSM/LTE modem file for your phone: https://mega.co.nz/#!65RQ3QJY!kINweEygAEWY6SlzzNGAaLkZXizqDbo2CIWFR23VzcY
Here's the link for the Bootloader for your phone:
https://mega.co.nz/#!64pwGboB!aCMhkHXCGhKofNZVUhc4PdnOalD7oBtpdQhKgG5PQas
They need to be flashed via Odin.
All you have to do is put your phone in download mode.
Power Off.
Hold Power Button + Home Button + Volume Down button
The phone will ask you to accept or not
Press the Volume Up Button to enter download mode
The screen should say "Downloading, Do not turn off target"
Connect your phone to your laptop/PC and let drivers install.
Download Odin (any version), v3.07 and 3.09 work fine for me.
Once your phone is detected, one of the rectangles in Odin should turn either yellow or blue and say the COM:ID of your phone.
Once that is done, press BL and select the bootloader file.
Then press Phone (which is modem) and select the GSM/LTE modem file.
Once they are added to Odin successfully, press Start.
It'll take barely a minute.
Once it says PASS in Odin, reboot your phone.
Do a HARD reset.
Then insert your EE SIM and see if it works.
murtaza02 said:
All you have to do is put your phone in download mode.
Power Off.
Hold Power Button + Home Button + Volume Down button
The phone will ask you to accept or not
Press the Volume Up Button to enter download mode
The screen should say "Downloading, Do not turn off target"
Connect your phone to your laptop/PC and let drivers install.
Download Odin (any version), v3.07 and 3.09 work fine for me.
Once your phone is detected, one of the rectangles in Odin should turn either yellow or blue and say the COM:ID of your phone.
Once that is done, press BL and select the bootloader file.
Then press Phone (which is modem) and select the GSM/LTE modem file.
Once they are added to Odin successfully, press Start.
It'll take barely a minute.
Once it says PASS in Odin, reboot your phone.
Do a HARD reset.
Then insert your EE SIM and see if it works.
Click to expand...
Click to collapse
Thanks so much for your detailed reply. I have never done anything to the software on my phone before. Do you have a link or anything for a really basic step by step guide for this? I just don't want to get anything wrong and risk bricking my phone.
UPDATE 1: I did manage to follow your instructions after reading them a couple of times. Thanks very much for your help. I installed Odin 3.09, and added the BL and CP and did a hard reset. Everything worked well but it is still showing "Invalid SIM card" message with the EE sim. Any other ideas of where I can go from here?
UPDATE 2: I have followed this guide here to re-install the stock firmware for the GT-I9505. I installed the UK BTU 5.0.1 firmware. All went perfectly and I did a hard reset afterwards. The devices is still showing the "Invalid SIM card" error. Could this be a hardware issue after all?
tomedwards93 said:
Thanks so much for your detailed reply. I have never done anything to the software on my phone before. Do you have a link or anything for a really basic step by step guide for this? I just don't want to get anything wrong and risk bricking my phone.
UPDATE 1: I did manage to follow your instructions after reading them a couple of times. Thanks very much for your help. I installed Odin 3.09, and added the BL and CP and did a hard reset. Everything worked well but it is still showing "Invalid SIM card" message with the EE sim. Any other ideas of where I can go from here?
UPDATE 2: I have followed this guide here to re-install the stock firmware for the GT-I9505. I installed the UK BTU 5.0.1 firmware. All went perfectly and I did a hard reset afterwards. The devices is still showing the "Invalid SIM card" error. Could this be a hardware issue after all?
Click to expand...
Click to collapse
Firstly, I'm glad you installed the new OB8 modem.
Secondly, I'm just not getting convinced of the fact that this is a hardware problem. If it was, the other SIM (T-Mobile) wouldn't have worked on it.
Have you tried the EE SIMs in another phone? Also, were the SIMs issued recently or are they old ones?
T-Mobile and EE are the same network though aren't they, so I don't understand why the phone isn't accepting the SIM card.
A question for you, did you have your number ported to EE from T-Mobile or is it an entirely new number on EE?
I read on a few forums that when the number gets ported from a different carrier, the phone shows an Invalid SIM when you insert it until EE has fully ported the number.
However, if that's the case then the PAYG SIM card should've worked.
And the last question, was the device on contract from T-Mobile?
EDIT: After reading your first post again, you said that the EE PAYG SIM showed a 'No SIM' error, but the contract one showed an 'Invalid SIM' error. I have a feeling it's a SIM problem and not a hardware/software issue.
Ask EE to issue you a brand new SIM and first try it in another phone, if it works, then pop it in your S4.

No service, No IMEI and No clue

Hi,
My friend has bought a SGS7 because his SGS4 faced a problem, so he gave to me to fix it
The problem is as follows:
The phone sees the sim after maybe 5-10 minutes AFTER booting up and then 5-10 min after that it vibrates twice and than reboots its self. When the phone boots up and i try to view the imei by *#06# there is no response however a while after that when the sim is recognised the imei box pops up. Even without the sim the exact same things happen
#*The top part of the screen is gone slightly pink I think thats because its due to overheating as the phone is hot when for example is charging and not being used or when the phone is used to play spotify with the screen turned off dont know if this will help anyone the casue of the modem disfunctioning but the screen is pinkish where the processor and the sim is so...*#
Now i have tryed some troubleshooting withut success i have done as follows:
I've changed the sim tray which didnt help at all
I put tape on the sim/sdcard conncetor to add more pesssure (worked for other) without success
Tried to downgrade to 4.4.2 to change modem as there is no mode for the lolipop version of the stock rom
And lastly i have applyed the 4.4.2 modem to 5.0.1 that did nothing to the system
Please help me i have searched trough google and found out that this only happens when downgrading for lolipop to kitkat but he has never done anything to the phone no root not even a screen repair (where im based there are may scamers who replase the screen and than say the for the screen to work that had to modify the system thanks to that they charge more for the repair)
Please help, anyhelp is useful
cheers
Anyone?
the_ziom said:
Hi,
My friend has bought a SGS7 because his SGS4 faced a problem, so he gave to me to fix it
The problem is as follows:
The phone sees the sim after maybe 5-10 minutes AFTER booting up and then 5-10 min after that it vibrates twice and than reboots its self. When the phone boots up and i try to view the imei by *#06# there is no response however a while after that when the sim is recognised the imei box pops up. Even without the sim the exact same things happen
#*The top part of the screen is gone slightly pink I think thats because its due to overheating as the phone is hot when for example is charging and not being used or when the phone is used to play spotify with the screen turned off dont know if this will help anyone the casue of the modem disfunctioning but the screen is pinkish where the processor and the sim is so...*#
Now i have tryed some troubleshooting withut success i have done as follows:
I've changed the sim tray which didnt help at all
I put tape on the sim/sdcard conncetor to add more pesssure (worked for other) without success
Tried to downgrade to 4.4.2 to change modem as there is no mode for the lolipop version of the stock rom
And lastly i have applyed the 4.4.2 modem to 5.0.1 that did nothing to the system
Please help me i have searched trough google and found out that this only happens when downgrading for lolipop to kitkat but he has never done anything to the phone no root not even a screen repair (where im based there are may scamers who replase the screen and than say the for the screen to work that had to modify the system thanks to that they charge more for the repair)
Please help, anyhelp is useful
cheers
Click to expand...
Click to collapse
I'm having the same issue.
Fresh wipe and install corrects the error but once the battery goes flat I lose all connection except WiFi.
Non of the *# codes seem to work either.
Any help would be appreciated.
Thanks

Help Restoring network operation of S8 active.

Okay so i tried the SamFail Rom / Root. 5 seconds into the root i got an error, a PIT fail code. The phone which is a carrier unlocked one went into an infinite boot loop on the recovery screen, and wouldn't let me enter the recovery options. I tried many hard resets, took out the battery, and even let it drain but nothing helped, it would just boot loops into the downloading update / Error . After all this i decided to try to flash the original firmware into it. Only thing is i didn't write down the software version. But since i have t mobile i thought why not just flash it with the latest tmobile software. So i did.
Now the phone turns on and everything works but it wont connect to the network. IMS registration status is not registered, Mobile network state is Disconnected but it does say T-Mobile which is my carrier.
Under the Odin download mode, before i even flashed it at the top left under carrier IT said SPR so i figured the phone was originally a sprint phone then unlocked and sold by the company. so i also tried the SPRINT software but same thing happens.
Under Co figuring Service it just stays registering then says " Please contact your service provider....." internal error -1.
Under UICC Unlock it says Your device is unlocked for any SIM card but then when i click it, it says SIM unlocking could not be completed please try again later. Internal Error 407.
Any help or insight would be appreciated. i don't care about the root anymore i just want the phone to work normally, Thanks.
---------------------------------------------------------
:Edit - I messed with it enough now it shows LTE service and everything but the. SPRINT OMADM Message wont go away. And the Carrier Hub - Requests are processing wont go away. also i get very minimum service if any at all. . Any help? Thanks.
Click on settings app->apps->click 3 dots button at upper right corner->click show systemapps-> search Sprint OMADM app and force stop it

My H918 SIM Relocked Itself After A Hard Reset. What can be done?

The title says it all.
I bought an unlocked H918 from Amazon last year. It's been working well until the last few days when I began noticing that calls would go straight to voicemail even though the phone displayed that the SIM card had a strong signal reception. I decided to do a hard reset to try and remedy this. After the hard reset I powered on the phone only to have it state that it does not recognize the SIM card in the phone. I saw that the Device Unlock app had reappeared on the app drawer. Trying to use it to unlock the device gives me this message: Unlock failed. Unknown Error. Please try again.
I have tried it several times, and it keeps giving me this error. What might be the problem? And what can I do to remedy it?
Thanks.

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