Today 3G is seen as a legacy product, and 3G is even closed in a few countries - replaced by a 4G solution.
A 3G wireless modules can be less expensive than a higher-Cat 4G module and comes with many features & benefits. It can also be faster than lower-Cat 1 LTE module. However, it not recommended for new designs, with an expected long-life span.
Please consider a new 4G or NB-IoT modules this will most likely be a better solution.