I am changing my review. I ordered 3 phones, but 2 of them were not turning on after two months. It was impossible to understand what happened and replacing the battery was not the solution. Externally the phones were intact.
The seller asked to send the phones back to China, which I did at my own expenses. They claim that they never received the phones. However, the tracking number with UK RoyalMail said that the phones have been delivered.
In short 2/3 of the phones were gone after few months and sending them back was not solving the issue because apparently the phones were never received