Basic problem is that a phone can die from one second to the next. I had it. Woke up with phone alarm. Went to bus station and wanted to look what time it is. No reaction at all. Mainboard died and i had to wait 2 weeks to get the phone with text: we where not able to restore the data. It was a Note 2 from Samsung. So i would never trust a phone! I had some bitcoins in my phonewallet but i had a complete backup of everything. So no loss.
All electronics can die without warning. You should always have backup/seed for any device.
You are right.
Backup is very important. Currently Bither Cold provides automatically backup strategies, and we will improve this function in the future version.
Thanks for your advice, it's very helpful.
