It appears that all the telecom networks in Nigeria are in serious competition. Each and everyone of them trying to dominate the market. And this is of great advantage to us users as these telecom networks, in a bid to gain more users, offer amazing promo. This makes people like us, switch from one network to another in order to reap the benefits of these bonuses. Hence, the need for us to know the code to check data balance, data balance expiry date and data bonus on all the major networks in Nigeria. I have taken my time to compile the list. Below are the code to check MTN, Airtel, 9Mobile, Glo and Visafone data balance, expiry date and data bonus.

How to Check MTN Data Balance, data Bonus and Expiry Date
The code to check MTN data balance is *559#. You can also check it by sending 2 to 131 or 403 to 131. Each of the above methods can be used to check MTN data balance. After dialing or sending the above code, MTN will send you a message containing your remaining data balance, data expiry date and data bonus if you have any.

How to Check Airtel Data Balance, Expiry Date and Data Bonus
Checking Airtel data balance is as easy as abc. All you have to do is to dial one of the following codes. Dial 141110# or dial *12310# or better still dial 141712*0#. You will receive a response that includes your data balance, data expiry date and data bonus.

How to Check Glo Data Balance, Data Bonus and Expiry Date
To check Glo data balance, data bonus or expiry date, simply send Info to 127 or send Status to </777.

How to Check 9Mobile Data Balance, Data Bonus or Expiry Date
I have written a detailed article on how to check 9Mobile data Balance, data bonus, expiry date and data bundle plan. However, you can simply Check 9Mobile data balance by dialing 228 .

How to Check Visafone Data Balance, Data Bonus and Expiry Date
To check Visafone data balance, expiry date and data bonus, dial 444601*modem number# or download Visafone Visa Mobile Data Notifier on your pc. Note that Visafone is a broadband provider. They are most popular in places like Lagos state.