most of the time that kinda of stuff can cost money if you put a hotspot down (depends on your carrier) if you root it you can put down a hotspot for free
I need it to connect my laptop to internet when the normal internet connection is not available. Anyway I found that Lenovo P770 has a kind of software called personal Hot Spot that can be used to share internet. There is no need to root the phone. Are a lot of softwares that you can install to your smartphone and PC to share the internet through USB or Wifi.
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