Multiple installed ROMs: How to share Apps and Data?

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Renth

Senior Member
May 1, 2012
204
9
Hi everybody,

recently I installed Dual Boot Patcher and RRemix as 2nd ROM. Now I wonder whether it is possible to use apps and/or aata commonly within both ROMs.
According to this description apps need to be installed within both ROMs. But how could I share my already existing WhatsApp threads or history and maps of my navigation software?
And even more: How can I use calendar entries and written memos commonly within both ROMs - since calendar apps and note apps are different stock apps within each ROM?
Would I have to install an independant calendar and notes app within either ROM?

Thanks in advance for your help!

Bye
 

Freewander10

Senior Member
Jan 3, 2015
643
472
Gotham
Samsung Galaxy S10
Hi everybody,

recently I installed Dual Boot Patcher and RRemix as 2nd ROM. Now I wonder whether it is possible to use apps and/or aata commonly within both ROMs.
According to this description apps need to be installed within both ROMs. But how could I share my already existing WhatsApp threads or history and maps of my navigation software?
And even more: How can I use calendar entries and written memos commonly within both ROMs - since calendar apps and note apps are different stock apps within each ROM?
Would I have to install an independant calendar and notes app within either ROM?

Thanks in advance for your help!

Bye
Google Calendar and Google Keep are great calendar and notes app with sync functionality. So backing up and transferring data from those two apps on different ROMS should be easy and automatic.
The rest of apps, you'll have to backup and restore with Titanium backup.
But you'll have to backup before changing between ROMs, then restore that backup after booting into the new ROM. or else your Whatsapp conversations/New data in ROM A will get overwritten with the conversations in ROM B instead of being merged.
 

Renth

Senior Member
May 1, 2012
204
9
OK, just tried it using VVS Mobile app. Marked it for sharing within Dual Boot Patcher in MIUI (first ROM). Afterwards I booted into RRemix (2nd ROM), installed it there too, marked it for sharing in addition. After rebooting I could see my saved VVS connections created within MIUI. Similar with here Maps - at least it finds downloaded offline maps but no route history. So it seems to work.
But with WhatsApp I did not get it working. While having it marked within both ROMs to use shared data I cannot see my chats within 2nd ROM. Does anybody have a helpful hint here?

Also contacts, calendar, SMS and call history is not shared while the apps within each ROM are marked for it. I guess I will have to use identical apps within either ROM in order to be able share their data? Or is there sth. else I need to do?
 
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