Data, text, signal, calls

[Talha3]

Sometimes my data doesn't work at all even though I have more than 2GB data, most the time my signal is either always on 1 bar or doesn't work, for some people I don't receive any of their text messages and some people that have shared their location with me, I still cannot see their location. When I am on the phone to anyone, the voice always breaks up so clearly there's something wrong with this phone or sim.