New smart phone manager circuit diagram

The circuit of the new smart phone manager is as shown in the figure. This device uses the intelligent communication dedicated integrated control chip ZH988A as the core to form a smart phone management machine. The circuit is as shown in the figure. Its main functions are: 1. Each phone can be divided into 19 users, with independent passwords and accounts, to achieve household management; 2. Limit the use rights, cost plans, etc. of each household; 3. Open 110, 119, 114 and other free items; 4 automatic calculation of call time and charges; 5 modification of available keyboards such as data passwords; 6 anti-theft monitoring; 7 P/T compatibility, etc.