Hello,
I’m looking for someone hosting this type of Phonetrack service
My young daughter is getting her first smartphone. Guess what? She has agreed not to be googled.
And I would like her to be able to find her phone if she loses it (no no no, I don’t want to watch her, I trust her, otherwise I wouldn’t give her a phone).
I cannot host Nextcloud at home. The electricity is not stable.
I tested FindMyDevice. What was a blocker for me was that although I tried to set the “find alarm” as Nuclear Alert, all I could hear when the phone is mislaid is one hit of medium volume tone! (maybe that is enough for a teenager) 
I also searched for a service to find my /e/ phone when if I will lose it. FindMyDevice is the perfect solution for me:
use only SMS - much more stable when there is poor internet (e.g. in the forest).
There is also the possibility to use a server if SMS is not wanted.
Would be really fine - when it will be part of eelo in the future.
Is that the new name to expect? ;- )
You could host your Nextcloud instance on a mobil-phone …
I plan to do that in the future.