help with buying topic

hey guys ive been looking for a new phone and this one seems to tick all the boxes but while looking for info on it ive found that there are a few different versions like f240 and l-04e and e980 and e986 and a few more lol, but im the sunny uk so im not sure if it will make a difference which one i buy? also does anyone have any suggestion where the best place to buy one of these phones from?

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