Device is overheating and lagging

[Obito09]

My Xperia M2 is overheating very much when doing anything especially while charging or using Internet 

After it gets hot.  It starts to lag and sometimes stop working at all 

Please a solution

[Qatrium]

@Obito09

I'd suggest that you perform a software repair using Xperia Companion. This will do a clean installation of the latest firmware and will also wipe your internal memory. Don't forget to backup using Xperia Companion, but preferably without adding apps or settings to the backup.

Follow the steps given in blue links, and keep us updated.