Series 0 battery being killed since getting a new iPhone

[2ilent8cho]

I had an iPhone SE running iOS 11.0.3 and my Series 0 38mm watch on WatchOS 4.0. Battery life was normal.

I then at the weekend got an iPhone 8, and then i paired the watch with my new iPhone, but since then my battery lasts about 5 hours, its eating 15%-20% an hour. I've checked for running Apps i don't have any running, when it runs out of battery its having a fresh boot.

Any idea how i find out whats causing this?

 

[Mercenary]

Did you restore your phone or setup as new? As if new then all that stuff to u turned off before like background app refresh is back on.

 

[2ilent8cho]

It restored a backup to the watch once i had paired it with my new iPhone.

 

[Mercenary]

It restored a backup to the watch once i had paired it with my new iPhone.

What about the phone? I meant background app refresh on the phone.

 

[2ilent8cho]

What about the phone? I meant background app refresh on the phone.

The phone was a restore from iCloud backup, but the phone is fine, its the Apple Watch battery thats the problem.

 

[broadbean]

Any idea how i find out whats causing this?

You're being punished for upgrading iPhone but not your Watch.