Is the mobile phone call reminder service free or charged?

Call reminder (SMS call) 1. In China (basement/elevator), when the customer shuts down or the mobile phone drops, the phone will be transferred to the voice response system to record the incoming number. When the customer turns on the phone or the mobile phone returns to normal, the call information will be sent to the customer's mobile phone by SMS. Second, the scope of application Any user who has the function of call forwarding and SMS can apply for opening this service. Third, the business hall can choose to open SMS immediately or the next month: edit "KTDXH" and send it to 100 Baru; Close: edit "QXDXH" and send it to a 00. 100 bar: dial 100 bar through the user's mobile phone, select the 0 key, switch to the manual station, and open the domestic business hall. After logging in to the business hall in China District, choose to turn on/off the call reminder (SMS call) business transaction. Pocket business hall opening: after logging in to the pocket business hall, select business processing to open/close the call reminder (SMS call). Fourth, the monthly function fee is three yuan. The SMS reminder received is free. Call reminder SMS application (SMS call) is free. Frequently asked questions (FAQ) 1. Sorry, I have a call reminder service. Why did someone call me after I turned off my phone? China didn't call to remind (SMS)? Answer: Because if you set unconditional transfer, its priority is higher than other transfer methods, after you turn off your phone, all incoming calls will still be transferred to the number you set, and you can't use the call reminder (SMS incoming call) service. You just need to cancel all the original call forwarding and re-apply for the call reminder (SMS call) service. Question and answer 2. I use a Nokia phone. Since the introduction of the call reminder service, every time I call China, the phone prompts: "Attention: Call Transfer". What happened? A: This happens because after you turn on the call reminder (SMS call), the system automatically sets up the call transfer that cannot be connected for you, which has no effect on your normal call. You can rest assured.