My mobile data has not been working properly- either really slow or does not work at all. At first I thought it was the phone network issue, however I switched network providers and I still have the same issue, despite being in an excellent coverage area. My sister is on the same mobile network but she has no issues whatsoever. I've also noticed during phone calls, the sound would cut out mid convo. Please help! I'm now pretty sure this is either a hardware issue or a software issue.
Thanks for the advice but I resorted to factory resetting, which did not help. It is strange as calls and data does not work in certain areas, but my sister's does (but a different phone). Could the antenna be partially broken?