Network problem

[Mdkamalkhanskymedic]

मैं अपने सैमसंग एम 40 मोबाइल को सैमसंग केयर सेंटर की मरम्मत के लिए देता हूं लेकिन मेरी समस्या का समाधान नहीं कर सके Nework .and hitting  problem 

[Ehsank]

For heating issue you can do 2 things and lets see

A. Wipe Cache Partition.
Steps to perform.
1) Turn off the device.
2) Press and hold the Volume Up key and the spower button.
3) When the Android logo displays, release all keys.
4) Press the Volume down key to navigate and select "Wipe cache partition".
5) Press Power key to select. When the wipe cache partition is complete, Select Reboot System.
6) Press the Power key to restart the device.

B. Reset App Preferences.
Settings >Apps> Tap on Top Right 3Dots and select Reset App preferences.
This can Help you little bit more.
But if unfortunately it won't work then last option is

3. "Factory Data Reset" but before that take proper backup.

[Ehsank]

and for network
go to settings >general Management >reset>reset network >restart your device then observe

[love2myself]

samsung wale **bleep** bannte hai call karo care me bolo ASM SE BAAT KARAYE PHR DEKHO KITNI JALDI PHONE THK HOTA HAI

[Mdkamalkhanskymedic]

ye post unlogo tak pahuch jaye to samjh aati