Nexus5 going for repairs - how to keep app data if they flash it?

[unwashed potato!]

so my nexus5 will be going in to repair a cracked screen and some other signal issues i've been having. if they flash the phone back to factory settings i'll lose the apps i have which i know is easy enough to get back, however i'd really not want to lose the apps i've logged into as i no longer have the password and can't easily get them, for instance netflix it's not my account but my parents and getting them to remember the password will take an age and a half, so it'd be easier if there was a way i can keep this.

any way i can do that? ideally it'd be great if i can make a full back up of the device and passwords, settings, everything as is is remember so i can just click a few buttons and have everything as it was before. any way to do that?

 

[opethdisciple]

Fairly sure the answer is no

 

[unwashed potato!]

so it turns out i might need root to use apps that will then give me the ability to back up protected app data. trouble is root removes all the data afaik. so i need to back up first. will backing up my phone, rooting, and then restoring that backup file bring it all back as was with login details?

 

[HecFam]

Titanium backup can back up a whole lot of settings, apks and app data. However it does require root. And I think that quite frequently rooting voids your warranty.

This thread may help, but i've never tried it before.

http://android.stackexchange.com/questions/28296/full-backup-of-non-rooted-devices

 

[Trox]

No need to root to back up app data, i used Helium for when updating to Android L and back.

https://play.google.com/store/apps/details?id=com.koushikdutta.backup&hl=en_GB
Easy to use and you can even back up direct to Dropbox for syncing app data between devices...

But if the phone is rooted I would HecFam's recommendation

 

[unwashed potato!]

ah netflix isn't covered b helium. thanks for the suggestion though