e06, You're welcome :-)
1. The native is always better than the android port. Votsapp native works great, it is updated frequently (especially in betazone). Skype native also works fine. Viber only .ark.
2. The BB will be sensitive to some other Chinese charge. But not to mains voltage. I myself charge from my own and from LG, everything is fine. Including from banks at 20,000mah.
3. I tried google chrome. Not bad. In 10.3.1.1154 they say a very corrected browser.
4. Not sure, but maybe in the off release there will be this opportunity ...
5. I did not bother, format on the BB itself. This may be related to old explosives with an axis of version 7.1 and lower.
6. GPS is not so much hawala. Lte here hawala a lot of energy! Plus, dig deeper into Advanced interaction, use the Energy-saving mode, turn off unlocking by swipe from below (so that only the button is unlocked).
7. I don’t know about this .. maybe someone else will tell :-) But like QNX does not suffer from an android disease with memory clutter.