MTN Nigeria recently introduced a new data and voice plan called XtraValue according to them
MTN XtraValue Bundle plan allows you buy a bundle that gives you a combination of huge airtime for voice calls and unbelievable volume of Data to go with it.

Etisalat also has a similar bundle plan called etisalat easy flex which you can read:
Etisalat Easy Flex evolution 2 in 1 Voice and Data plan packagesThe Bundles are available in 2 categories and at different price points from N300 to N5,000
1. XtraTalk Bundles – Offers higher airtime allocation for Voice calls than Data volume
2. XtraData Bundles – Gives higher volume of Data than airtime for voice calls
Bundles Offers and priceMtn offers two types of plan on the new MTN XtraValue namely
XtraTalk Bundles and
XtraData Bundles which goes this way:
1. XtraTalk BundlesXtraTalk as the name implies gives you more power to make more calls and less data.
=> N300 PlanAirtime Value for Calls: N975
Data Value: 50MB,
How to Subscribe: Text V300 to 131 OR Dial *131*2#
Validity: 7days
=> N500 PlanAirtime Value for Calls: N1,950
Data Value: 100MB
How to Subscribe: Text V500 to 131 OR Dial *131*2#
Validity: 7days
=> N1000 Plan Airtime Value for Calls: N3,875
Data Value: 312.50MB
How to Subscribe: Text V1000 to 131 OR Dial *131*2#
Validity: 14days
=> N2000 PlanAirtime Value for Calls: N9,750
Data Value: 625MB
How to Subscribe: Text V2000 to 131 OR Dial *131*2#
Validity: 30days
=> N5000 PlanAirtime Value for Calls: N24,500
Data Value: 1,666.67MB
How to Subscribe: Text V5000 to 131 OR Dial *131*2#
Validity: 30days
2. XtraData BundlesXtraData is the opposite of the first plan (XtraTalk) which gives you more for voice call and less for data while the XtraData gives you more data and less voice call.
=> N300 PlanAirtime Value for Calls: N372.00
Data Value: 150MB
How to Subscribe: Text D300 to 131 OR Dial *131#
Validity: 7days
=> N500 PlanAirtime Value for Calls: N624.00
Data Value: 300MB
How to Subscribe: Text D500 to 131 OR Dial *131#
Validity: 7days
=> N1000 Plan Airtime Value for Calls: N1,275
Data Value: 750MB
How to Subscribe: Text D1000 to 131 OR Dial *131#
Validity: 14days
=> N2000 PlanAirtime Value for Calls: N2,560
Data Value: 2000MB
How to Subscribe: Text D2000 to 131 OR Dial *131#
Validity: 30days
=> N5000 PlanAirtime Value for Calls: N6,500
Data Value: 5000MB
How to Subscribe: Text D5000 to 131 OR Dial *131#
Validity: 30days
Why you should use MTN Xtra ValueXtraValue gives you much more value for both voice and data than other tarrif plan, all in one package
The bundle airtime can be used for all calls including national and international calls as well as SMS
It gives you the convenience of one-time subscription for both voice calls and data