"More than 40 types of hardware and system diagnostics to help you find invisible smartphone issues. Trade-in appraisal conducted by various channels for used smartphones based on the phone condition to give you a convenient and quick way for trade-in. 1. Appraisal based on the phone condition, provide the most complete information on trade-in prices. 2. Provide more than 40 types of diagnostic tests based on our patented technology to quickly understand the phone status. 3. Provide system monitoring of hardware, battery, memory and storage. 4. Daily recording of battery capacity and charging cycles. 5. Track network usage, so that you will no longer worry about exceeding the mobile data usage. Please ensure that the network connection is available before starting Phone Doctor Plus. If you encounter any problems, please remove and re-install Phone Doctor Plus. For any questions and suggestions, please contact us at [email protected]"