Galaxy S7 randomly dropping data connection, how can I fix this?

[bazgrant]

Your carrier should send a new SIM for very low cost (or free if you ask nicely) so it is a good place to start. It definitely cured it for me

 

[becool773]

I am facing the same issue in 2017. Any fix for this?

 

[bazgrant]

I haven't had the issue at all since replacing the SIM card, I really do suggest you start there

 

[Jester23]

Re: Galaxy S7 randomly dropping data connection

I had sent my phone in for service because of it. Issue is now gone after they recalibrated the LTE something or other... I don't remember exactly what it was they did but it fixed it. Same sim card as before.

 

[Jooke86]

I'm sharing my story to, for what it's worht

I live in Sweden and I also have this problem with my brand new (as of june 2017) Galaxy s7.

It started after I had my phone on service through my carrier (is that what it's called? My net provider?/where I also bought the phone) for a broken display, when it came back, I noticed two connected kinds of problems:

1. I had problems with making calls and sending texts, aswell as recieving calls.
2. I had problems connecting to the mobile data net, lacking 3g and 4g connection too often, resulting in slow internet, and not being able to access the internet at all sometimes. This seems worse when I commuting, btw.

My Carrier sent me a new sim, had me do a factory reset, and I still had the problem. So I sent it back to my carrier to repair it again. They changed the entire circuit/mother board, sort of everything except the battery and shell, they said. BUT, the problem presists! The report said they found no problem with the phone but they did not mention any testing before the changing of the circuit/mother board. They only subjected it to standard tests after having replaced the circuit/motherboard.

While having my phone on repair, I was given a replacement phone, a galaxy a4 or a5. It worked like a charm, no problems, even when commuting.

Now I do not know what to do, I would have them send my another phone, I'll even take a cheaper one, as long as it works! We will see what they come up when I ask to have it checked again. I figure I'll will use it/test it for one week before reporting the issue again, though.

My suspicion at this point is that this is a software issue since they replaced the circuit/motherboard on my phone and the issue presists.

 

[Jooke86]

Should anyone be interrested, they fixed my phone when they repaired it for the second time. Changed the coaxial cables or something. I guess it's the antennas. Propably they damaged them when they repaired my display earlier in the year.

 

[Oliden89]

I'm having the same issue with my phone only to find out that it is in the network operator keeps switching I have to put it on the three band one they inform me that that's why it's happening but again mine didn't start happening until this latest update of Oreo so my whole thing is is I think it's in there update I've done a new sim I've got a new phone so I when I have my old phone I already had reset it back to factory setting already which pissed me off put in a couple of new SIM cards and I am still having the same issue ,so that goes to tell me that it's not a network error it's Hardware writing error. I've been dealing with Verizon for the past 2 months pretty much every other day and I am the one that figured out that it was the network operator is why it's happening but they can't tell me how to fix it.

 

[Rukbat]

Bring it into a Verizon company store and ask them if they do repairs on the premises, or where the nearest store that does repairs is. Bring it to that store and ask them (at repair - when you're asked what the rep can help you with, just say that you've brought in a phone for the repair shop) if they can please duplicate the problem and figure out what the heck is going on - and if they can fix it to save Verizon the cost of having to replace another phone. (In other words, you're not asking them to help you, you're asking them to help their employer.)

As for what's causing it - I'm glad I'm retired., That's the sort of thing that explains why most of the people working in fields like that are bald. (And it hurts when you tear out a handful of hair.)