Has anybody actually made a warranty claim / sent a device for repair?
I seem to recall a few people in other threads indicating the phone would have to be posted back to China and was thus not worth having.
Having just sent an 18 month old flagship Sony phone for repair, a warranty repair service in Germany seems a much better proposition and perhaps worth the asking price.

EDIT
Following link is maybe food for thought
https://techtablets.com/forum/topic/twg-replacement-warranty-with-aliexpress/

The 'Global Version' in this deal. The 3/32GB version of it is currently around £118 from the same seller which might be better value. It has B20, so full UK network support. It will be factory sealed with Xiaomi Official Global ROM pre-installed so will have Google Play + OTA updates.

None of the listings from that seller appear to be the same as the phone in this deal
Redmi Note 4 Prime Deca core = Original China Note 4 Mediatek
Redmi Note 4X Pro Snapdragon = China Note 4X Snapdragon
This phone = Different country release (not China), is called Note 4 like original China Mediatek, but is Snapdragon like China Note 4X. Also has band 20 which neither of the above 2 have, hence "Global Version".

Here is the confusing part... in China the Note 4X 3/32GB is Snapdragon but the Note 4X 4/64GB is Mediatek. If you look at the official China Mi site Redmi Note 4X product page, the specs change when you switch between 3/32GB and 4/64GB. If you search Aliexpress for "Redmi Note 4X 64GB", the results are all Mediatek deca core listings. There isn't a Snapdragon 4/64GB that is called Note 4X but the 2nd eBay is advertising it as that when it should only be the Global Version Note 4 that is Snapdragon with 4/64GB variant. If you search again on Aliexpress, but for "Note 4 Snapdragon 64GB", all of the results are 'Global Version' with B20

So there's 3 possibilities if you ordered the 4/64GB Note 4X Snapdragon 625 from the 2nd link above:
1 - It is is wrongly advertised for band support and name, and you will receive the same phone in this deal which is named Note 4 with B20 (not Note 4X without B20 as advertised in eBay listing)
2 - The seller has incorrectly assumed that the Note 4X 4/64GB version is just the same Snapdragon 625 as the Note 4X 3/32GB but with more ram/storage, but instead you will receive a Mediatek Note 4X which is what the 4/64GB should be.
3 - This is a new Note 4X 4/64GB variant from another region and the info is correct and is Snapdragon but no B20.

Either way I don't think it's worth the approx £70 additional cost especially when a 4/64GB version with that name/spec doesn't appear to exist so it's unclear what it's supposed to be.

I have had both the p2 and this phone, this has better audio through the headphone Jack, better reception, recent security updates as opposed to the p2 and for those who care, glass protectors cover the actual screen size (not the curved edges) unlike glass protectors on the p2 which exhibit a distracting effect on either side of the display due to there being a gap at either side of the display that does not connect with the screen protectors. The p2 has a nicer screen but it's marginal as the xiaomi screen is pretty decent. Battery life wasn't that different in my use between them maybe another 2 hours screen on time between them. 10-12 on the xiaomi (sometimes 14) and 12-14 hours screen on time on the p2. Preferred the xiaomi personally but can understand choosing the p2 if warranty is a concern for some.

MediaTek chip?

If this the same as the 32gb? Gutted. Just ordered mine 2 days ago!

Doesn't look like the black is available. So, is this the greatest 'bang for buck' phone out there?

Oh I forgot TCB ~
£11

Where from?

I have had both the p2 and this phone, this has better audio through the headphone Jack, better reception, recent security updates as opposed to the p2 and for those who care, glass protectors cover the actual screen size (not the curved edges) unlike glass protectors on the p2 which exhibit a distracting effect on either side of the display due to there being a gap at either side of the display that does not connect with the screen protectors. The p2 has a nicer screen but it's marginal as the xiaomi screen is pretty decent. Battery life wasn't that different in my use between them maybe another 2 hours screen on time between them. 10-12 on the xiaomi (sometimes 14) and 12-14 hours screen on time on the p2. Preferred the xiaomi personally but can understand choosing the p2 if warranty is a concern for some.

http://www.hotukdeals.com/deals/lenovo-p2-huge-battery-fast-charging-decent-specs-199-10-top-up-three-2600354?page=74#comments

Three, £209.99 with £10 credit if you're not a three customer, if you are, can go to a shop and you'll get it for £199.99. tbh, all they asked me for was my three number and didn't check anything else, so can just use somebody else's. Three sell their phones unlocked.
Currently 26 hours off charge, 2 hrs 50 mins screen on time, and still on 70% battery

was using the unlocked p2 bought from the three store on the tesco network, tested both phones on tesco network seemed to get better signal/wifi on the xiaomi, not to imply the p2 was unusable, far from it. Both decent phones just for my usage habits the xiaomi is preferable.