Problem With Call Sound and Mic Both

Dear Friends,

I have problem with my Moto G (XT1033 Indian Version) problem are listed below.

1. Major Problem- Call Sound blocked sometimes (both way sound is not
coming at the time of calling someone or at the time of receiving the call,
after a restart its resolved always) when I update Motorola Boot Services
the problem is raised frequently.

2. Network signal loss after switching ON 3G data service. (Network signal
fluctuating till 3G is ON)

3. Heating issue of Phone (up-to 35-40 Degree Celsius) (without using any
app)

4. Font rendering, while using chrome or any browser able to see glitch in
fonts, its like incomplete font visibility on screen ( already raised a
complain below.

5. network Signal loss in No data connection.

I have done Factory Reset tow times, but problems are still same.

Please help me....

My Phone XT1033 Indian Version (Dual Sim) On Stock Android (4.4.2)