It's probably screen addiction. I don't think that it will get better if you simply get rid of the tablet now. I suppose it's better to find a new hobby for the kid so that he could make new friends and spend more time outside and without any devices. + It's helpful to use some kind of parental control so that you could limit the time he spends in mobile games. To be honest, I managed to hope with my kid's screen... Source: over 3 years ago

I support previous comments, it's helpful to find a new hobby. Just try to remember what you were interested in when you were a child and start doing it now. Social media is not bad but you must always know what you'll do if the smartphone is offline or turned on. Otherwise, it looks like screen addiction. Limiting screen time with parental control apps is also a good idea. It helped my closest person to get rid... Source: over 3 years ago

Https://apps.nextcloud.com/apps/phonetrack (if you have a nextcloud) The nextcloud one is by far the lightest on my phone battery, the other ones would often use very much battery. But I use android and YMMV. - Source: Hacker News / over 1 year ago

You mentioned a standalone solution rather than the Nextcloud option -- just to throw it out there, here's the nextcloud plugin: https://apps.nextcloud.com/apps/phonetrack. Source: over 1 year ago

Nextcloud Maps works quite well. You can even use the tracker app: https://apps.nextcloud.com/apps/phonetrack. Source: over 1 year ago

There's a Nextcloud plug-in that does this. Hopefully that's a somewhat useful start. Source: over 1 year ago

There is PhoneTrack as an app, not OwnTracks but it does have similar features and it worked for me in the past. Source: almost 2 years ago