What is an overlay package?

It is to superimpose some other packages on the original basis.

It can be traffic, SMS, etc. If the original package traffic is 1G for one month, then buying 1G traffic is the superimposed package. In general, overlapping packages are still very common.

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4G packages are much more favorable than mobile 3G packages. Take the 4G unified package as an example. 138 yuan package includes 600M domestic data traffic, 400M provincial data traffic and 500 minutes of domestic calls. The 3G Internet package at the same price includes 400M data traffic, and domestic calls take 420 minutes. In addition, the 4G package of mobile Internet traffic in 50 yuan includes 600M domestic traffic and 400M provincial traffic.

The mobile phone traffic of 3G in 50 yuan is 500M. Unicom's 4G package is divided into "free combination package" and "4G/3G integrated package". Free combination packages can be freely matched by users in traffic packages, voice calls, SMS/MMS and value-added services. Only the traffic package is needed, and other items are optional-the lowest combination can be 14 yuan per month, that is, 8 yuan 100MB traffic and 6 yuan caller ID.