Since my iPhone's system performance is getting slower and slower. I wanted to sell or swap it. But I need advice if it is worth swapping to ASUS Zenfone 5.5? It is yet the available phone. What do you think guys?
I don't think this is a good idea, if you are using an iPhone 6 then just keep using it, in the case your iPhone is running slowly, you can apply some tips to improve its performance. ASUS Zenfone 5.5 can be a good choice but iPhone 6 is still be better.