I have been using my Lumia 950XL for about 20 months, and still like it.  Recently it was locking up regularly when waking up so I bought some new batteries from Ali Express.

For those that may be experiencing similar problems, the symptoms were a flash of white on the screen and then nothing. I had to hold down power button for 12 seconds to reboot it. Various posts suggested the extra load on the battery when powering the screen on could have been the cause.

So these new batteries have arrived, I've charged them fully, let the phone go flat, and fully recharged again a few times, as recommended by the seller. The initial problems have gone, but when carrying the phone in my pocket (where it basically lives) it will just power off randomly up to about 3 times a day.

Since I suspect the new batteries are at fault, I'm looking for a favour. If there is anyone in Christchurch that I could loan a battery to, or preferably swap your battery for one of mine, for just a day, that would allow me to find out whether the phone is at fault (if it still turns off in my pocket) or the battery (if your phone starts turning off).

I'm happy to drive out to you to do the swap at a time that suits you, and obviously I promise you can have your battery back once the test is done.  Happy for you to take my driver's license details as proof of identity, or a copy of a phone bill or something to prove my address.

If the battery is at fault then I'll attempt a refund from the seller and find another one. If it's the phone, I don't know what I'll do - I'd hate to throw out my favourite phone.

Any help appreciated. If you could post a reply here and private message me, we can swap contact details and see what suits.

Cheers,

Bob T