Would unlock bootloader cause Android Pay unavailable and cannot get online theme?

Would unlock bootloader cause Android Pay unavailable and cannot get online theme?

Or, In general, is there have any potential problem would caused by unlock bootloader? If i just unlock it without doing anything.

Thanks

HTC One m8- Mobile data disconnected because service is unavailable.

Hi, i have a little problem with my mobile data. After a factory reset in settings it shows "disconnected because service is unavailable". I have tried everything: new apn add manually, soft reset, airplane mode, reset mobile settings.. nothing works. I have read a lot of threads on the forum- nothing helps me. On other phone (HTC Desire 620G) mobile data is working.
Is the fault of the phone? Please help :(

service unavailable. my E2306 randomly just dropped off the network last night

I was out last night and suddenly my phone has no service. Get home try to restart, gets stuck in boot sequence. Trying all the resets I can finally boot the phone. Reset it, same problem. I doubt it's my service provider.

3rd time I've had a major problem with this phone in less than a year. It feels like I might have to RMA it again.

Any other suggestions before I do that? When I restart the phone it just gets stuck in the boot loop and I need to use volume up + power to turn it on fully.

I've never had so many problems with a phone. As much as I try to like this phone, it's an absolute turd. Can't wait for my free upgrade in November.