Webif you purchased it in store, you could take it back to the store for return or exchange as long as it is with the return/exchange window for the purchase. If you ordered it online,. Webreturn a device or accessory ( 'device) within 14 days of the purchase date for in store purchases or postmarked 14 days from delivery date for online purchases of the original. However, there are a few key things to. You can return the device to a store only if you haven't started a return order yet. Webjan 5, 2022 · factory reset and remove the sim from the old phone. You may have to return the charger but like the previous poster stated tmobile should of sent you a.