My retired parents bought a phone in Kyivstar in Sumy, it turned out to be defective, they handed it over to the Kyivstar store, they did not return the money, they allegedly sent it for examination, a month has passed, they found that the damage was factory-made, but they do not want to give money or a new phone, wait up to 90 days. According to the seller: the conclusion has come that the motherboard is defective, the battery is defective.
Even with this conclusion, it's not the parents' fault – they pull, they don't want to give either money or a new phone. The exact dates are not given. For the money of pensioners paid for a new phone, they want to hand over apparently not a new one. I don't recommend this store to anyone, you won't have any problems!