I bought an iPhone 12 from the Stratford branch on Friday 11th July. I noticed in store that the phone got a bit warm as I was setting it up after I bought it, mentioned it to the sales person (Sravan) and he advised me that it was normal as I was downloading a lot of apps at once. The following day, I got a notification from Apple saying that the battery was not an original Apple part/genuine and it keeps going hot all the time. I am based in Manchester and unable to return the phone in store, so I called the store. I explained my situation and at first apparently I couldn't even get a refund for it, but then I could get a refund only if I returned it to the shop in person even though I made him aware I coudn't travelled down to London just to return the phone. I will escalate this matter with my bank for a chargeback.