if you want a phone with long battary life, a big screen and perfomence then this is the best option... it never slows, not even while using LTE. Battary give you more than 2 1/2 days with avarage use.
I'm not quite happy with the operating system windows mobile 8.1 but I think this phablet will be perfect with windows 10. Except for the operating system it is already great. Great build quality, huge replaceable battery and it's cheap.
At last I found a phone that had all the specs I wanted ,or would put up with at a great price... then I turned it on. MS would have done well to customize android, than to screw up so bad with 8.1 . Im sorry I bought this now. My only hope is that 10.1 is a real improvement , and replacement... rather than just a glorified patch for such an inferior OS
I really like thye Lumia 640 XL, it's my first phablet i can say it's handy enought, it has great camara, the battery is awesome (it never let me down during the day). The UI is fast and fluid (because of Windows Phone OS) it also cames with Demin update and it will get Windows 10 first (36 months of update cyrcle is a lot). The display, is HD and the size is 5,7 but you won't noticed any difference, cuz the screen is clear and it also has great viewing angles.
i love the daylight camera quality. it's fast and accurate. takes beautiful photos. 5.7" inch screen is better for web browsing, office files ,videos and for games. can you believe? battery lasts 4 days on normal usage.