How long does it take for China Mobile to upgrade its system?

Small system upgrades generally take two to four hours; large system upgrades generally take five to six hours.

The time for China Mobile system upgrade is not fixed, and the specific upgrade time needs to be determined according to the upgrade content. Generally speaking, small system upgrades take two to four hours, and large system upgrades take five to six hours.

China Mobile is China's largest mobile communications operator, established in 2000. It provides a wide range of mobile communication services, including mobile phone calls, SMS, MMS, wireless Internet access, etc. China Mobile also provides a series of data and Internet services, including enterprise network services, cloud computing services, etc.