+ you can use the performant MS edge browser on your phone (maybe you will find third party solutions in the MS store as well )
P.S. the entire FB app family will take a brake, except for WhatsApp (for now) ++ I am not very affected because on mobile did not use the FB app & on desktop mostly for market research purposes ++ let us not forget that there are more than 42 million followers to the Microsoft Lumia FB account, which shows the extraordinary potential of a great tech ecosystem ++ a cause is lost, until it is found or won ++
++ I am really happy to see that there are initiatives to support Windows 10 mobile on Microsoft Community, Change.org, Twitter, MS Forms and other platforms ++ I advise you to be active & start initiatives ++ you have to be able to wait if these initiatives can achieve traction & you need to search for our fragmented & discouraged user base ++ e.g. if you enter on twitter search the keywords "Windows Phone" or Windows 10 mobile" or "Lumia" you can find many brave users & you can post your petition links to them & they can sign it as well ++ my opinion is that in order to have the best outcome initiatives have to be launched on Microsoft Community, MS Feedback Hub & CHANGE.ORG ++ you have to take your time & do not be discouraged by the difficult start ++