CallChecker-Tra cứu nhà mạng is a free Android application developed by L.H.C in the Social & Communication category. This app provides users with two main functions: checking the network of a phone number and looking up phone contacts.

With CallChecker-Tra cứu nhà mạng, users can easily check the network of a phone number, especially when they want to switch to a new network. In addition, users can also look up phone contacts saved on their devices quickly and conveniently.

Please note that due to Google's policy, some permissions to access call log and phone numbers are limited in the new version. Therefore, users who want to access all features of the app without ads can install the old version.

Overall, CallChecker-Tra cứu nhà mạng is a useful and convenient tool for those who need to check network information and manage phone contacts.