surveillance camera with old android phone (broken screen or no use)

-Get ewelink camera APP from google play store on the phone you want to use as camera
-Get ewelink APP from google play store on phone/pc you want to view from
-register on ewelink APP and connect both devices to account/wifi
(i had to get android emulator on pc to view it from pc)

for any questions feel free to ask

Man I love technology but for those concerned with security they may wish to add some encryption of some nature, perhaps VPN? I dunno if this particular software has been hacked but back doors are common.