Can't receive calls, have to cycle airplane mode to activate data - T-Mobile Samsung Galaxy S7 Questions & Answers

Hello, so I recently went from sprint to t-mobile, ported my number, etc. The plan was to flash U onto my g930p but I'm stuck on sprint's qjp3/series 5 firmware until a compatible U or even T firmware is released. I have had a couple of issues with my device that have sort of popped up over the month or so I have been on tmobile, namely that I cannot receive calls, every time someone calls me they are sent straight to voicemail. I do receive notifications for voicemail and the voice messages themselves, but that's it. I can make outgoing calls, however usually the first attempt at an outgoing call fails, then further attempts actually dial. Also, upon restarting the device I always have to cycle airplane mode in order to get the data to catch and start working. SMS and MMS work fine. If anyone has any insight into solutions to these problems, particularly the not receiving incoming calls, I would greatly appreciate it.

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[Q] Help! Stock HTC Inspire not receiving incoming calls or texts

So about 3 days ago my Inspire randomly stopped receiving incoming calls/texts, callers ring out to voicemail and I have no idea anyone has called. Talked with AT&T tech support and found out there are no problems on their end. Also, incoming calls/texts will be received during outgoing calls I make (apparently the calls are routed differently for call waiting). I've tried deleting apps i've downloaded recently and even a factory data reset, still with no luck. If anyone has any idea what could be causing this problem, I would really appreciate any help you could offer. Thanks!
- B
take out SIM
put back in
try SIM swapping with other phone
I am having same problem, randomly not receiving calls if the caller leaves a VM I generally get it later. sometimes my wife will call me on home phone and tell me my cell is not ringing and if I try to call myself it works about half the time, no idea what is causing this.

Incoming calls going directly to voicemail

I am running the Powerwashed ROM on my Samsung Fascinate:
http://forum.xda-developers.com/showthread.php?t=1242747
Everything was working perfectly until I decided to try out a new ICS rom, then I found out that data wasn't working with Cricket and I couldn't get the phone to connect to a COM port to work on programming the data again.
I gave up and decided to restore my nandroid backup, which I eventually got working. The problem I have now is, I have data, web, mms, and outgoing calls. Incoming calls however go directly to my voicemail, using Google Voice. DND is not checked, the phone is registered in GV, no call restrictions, no forwarding enabled.
What else can I check?

[Q] Cannot receive incoming calls after suspension/sleep

Couldn't find my exact situation. Called ATT and they have never heard of it before.
ATT gs3 running CM10, has happened on nightlies as well as the stable
factory reset, reflash, same issues
1. Have phone charging or leave phone alone for 3-4 hours
2. Will not receive incoming calls. No call screen, not just silent.
3. No missed call notification
4. No voicemail notification if voicemail is left
5. my signal strength shows the radio is on and has high signal strength.
Work-around:
1. I just have to use the phone features (calling out, dialing voicemail), then i can receive calls again.
Because I don't have to reset the phone I feel like whatever service for dialing/phone is shutting off to save battery, but won't "wake" until i make a call. I would like not having to make a call every few hours to receive incoming calls.
Haven't heard of this you may want to ask this in the att forum. This is the Verizon one. It may be something that is an att cm10 problem.
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[Q] Why does a disconnected phone still make outgoing calls?

I have a Verizon Blackberry that has been sitting in a drawer for 4 years. It was given to me when I was helping someone out with their computer. I am not sure where the phone comes from originally. It was wiped when I received it. The other day, I gave it to my little sister so she could play with it, and she immediately tried calling my phone. The call went through. I haven't ever activated this phone, but it can make outgoing phone calls. All outgoing calls show up as restricted. It can't receive or send text messages. When I try to call the number that the phone says it has, I get a generic voicemail and the phone does not ring. Noone ever answers the number, or calls me back if I leave a message. On outgoing calls the 1 and the area code have to be dialed, otherwise I get an error message saying that this phone is not active at this time. Does anyone have any idea what this phone is or why it still makes outgoing calls?
Bump... any ideas?
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Connectivity issue

Hi, I have an L29 C432B581 on Virgin mobile in the UK. There's a strange issue that intermittently, the phone does not receive incoming calls and sends them straight to voicemail. Outgoing calls are fine, and usually (but not always) in coming calls made after outgoing calls are also fine.
I've checked the call forwarding settings, already done a factory reset, got a new sim from the carrier, but no luck. Tried the sim on a different phone and no such problems.
Its as though the phone goes to sleep for incoming calls and needs to be woken up by reconnecting to the carrier.
Not sure if I'm missing a straightforward setting somewhere or if its a handset issue. Any help would be highly appreciated.
Thanks

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