While such a design can help make the device thinner, it can also make it difficult to replace the battery without sending the entire device away for repairs or purchasing an entirely new device.[20] On a device with a non-openable back cover (non-user-replaceable battery), a manual (forced) battery replacement might induce permanent damage, including loss of water-resistance due to damages on the water-protecting seal, as well as risking serious, even irreparable damage to the phone's main board as a result of having to pry the battery free from strong adhesive in proximity to delicate components. The manufacturer or a repair service might be able to replace the battery. In the latter case, this could void the warranty on the device.[citation needed]