apps closing off suddenly (while in use)

[faiz ahmeds]

hello,
i have got a lenovo s850 mobile which is a very good, but suddenly i have noticed that the apps which i was using since a long time is closing suddenly in between. my keyboard is also showing the same problem. it just goes off when i am still typing something. I am very worried as this happens constantly which is very frustrating.
please help

 

[Onus]

It may be overheating, and in need of the dust being blown out of it. Lenovo provides decent instructions for the partial disassembly of their laptops, which should allow you to access the fan to get the dust out of it.
Use a can of pressurized gas rather than a vacuum cleaner, as the latter can produce destructive static.

 

[faiz ahmeds]

it is a mobile phone not a laptop