Which device to choose instead of a phone + tablet combination?

Question

Mobile devices

Guys, here I have an Ipad2 tablet and a Lumia800 phone. Both are morally obsolete, the iPad is out - even displaying Internet pages it swaps and reboots.
Tell me some one practical device - be it a shovel phone, or a small tablet that can call, which would combine two devices as fully as possible.
Flash required. Windows OS preferred. A good battery is very critical - devices that die after 3-4 hours of work go to hell. Special wishes and requirements will be developed in the course of a lively discussion. Offer Android, unless it’s really a good recommendation - I’m extremely biased towards it (I got to know each other closely at the junction of versions 1 and 2, since I got an extremely negative experience, I don’t look at them).
The question arose due to an overload of devices: phone, tablet, laptop, PC. Everything is used little by little, I can’t completely abandon a certain device yet. Maybe there are some abstract thoughts about this - read?

Answer 1

You can take the Microsoft Surface 3 tablet - chic and shiny on Windows 8.1, but it's expensive, and as a phone, I see Nexus 5, Meizu MX4 Pro, Samsung Galaxy Note 3, 4 and many other options.

Answer 2

So, Lumia 940 is credited with a 5.2'' QHD screen, 3 GB of RAM, 32 GB of internal memory, a 20-megapixel camera and a 3000 mAh battery. The larger modification with the XL prefix differs from the previous smartphone with a 5.7'' screen and a 3300 mAh battery. The Lumia 940 XL will reportedly be powered by a Snapdragon 808 processor. Apparently, Microsoft decided not to risk it with the Snapdragon 810, just like LG did with the G4.
will be in the top ten. I'm waiting to replace my 920th, otherwise it's already dying from test builds of the 10th and a weak battery. output is promised simultaneously with Windows in the summer.