We can buy "Android Endoscope Inspection" in a few websites, they can show vidio in the mobile phone. Can you tell me if we need to install an app into the mobile phone in advance?
Depends on the version of android you're using and what (if any) UI tweaks have been made by your phone/tablet manufacturer - you should be ok with more recent versions of android. If you do need an app there'll be loads of free ones out there to do the job on google play.
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