Verizon Wireless says it is working to fix the handoff from its 3G network to LTE on its LG modem, which can take up to two minutes.

The issue only affects Verizon's LG VL600 USB modem when the device is trying to switch from the carrier's CDMA network to its LTE network, said company spokesman Jeffery Nelson.

The modem does not appear to have any problems switching from LTE to CDMA, and the handoff issue does not affect Verizon's other LTE USB modem, the Pantech UML290, Nelson said.

"Very few people" have reported issues getting the modem to switch from its 3G network to its LTE network, he said, but for some, it could take a minute or two of buffering before the device is able to connect to the higher-speed network. Verizon is working with LG to speed up the device's handoff between CDMA and LTE.

The USB modems were the first devices to launch with Verizon's LTE network, which was turned on in 38 metropolitan areas on Dec. 5. Both devices can be purchased for $99.99 with a two-year contract. Verizon is charging its LTE customers $50 per month for 5 GB of data and $80 per month for 10 GB of data. Customers pay $10 for each gigabyte of data they consume not covered by their plan.