We take every effort to ensure the integrity of the data on your device. Most common repairs often involving component replacement do not affect the stored data whatsoever.
In some situations the damage to the device which prompted your visit to a repair shop would have already caused your data to be lost. We do offer data recovery services for these scenarios.
Other situations involving reinstalling operating systems or firmware, or when the device does not turn on or fully start, may require wiping the device data.