Can China Telecom's SIM card be used on ordinary mobile phones?

The answer is no, because the mobile phone card of China Telecom is called UIM card, and the supported communication frequency bands are CDMA 1X and CDMA2000. Therefore, the number of China Telecom can only be used on mobile phones supporting CDMA. Mobile phones supporting the network standards of China Mobile and China Unicom cannot use the mobile phone card of China Telecom. Secondly, explain the misunderstanding in the above questions. At present, China Mobile, China Unicom and China Telecom are all 3G mobile service operators, but they use different standard frequency bands. 1. The 3G frequency band used by China Mobile is TD-CDMA；; ; 2. The 3G frequency band used by China Unicom is WCDMA；; 3. The 3G band used by China Telecom is CDMA2000. Now, because most countries adopt WCDMA as the communication frequency band, parallel mobile phones on the market can support Unicom's 3G services. In our current 2G, China Mobile and China Unicom both use GMS, which is what we often call G network. Therefore, China Mobile and China Unicom can be common in 2G mobile phones.