Dynamic control of single switched uplink versus multi uplink

A mobile device comprising:

• a plurality of antennas including a first antenna and a second antenna;
• a front end system including a plurality of transmit chains including a first transmit chain electrically connected to the first antenna and a second transmit chain electrically connected to the second antenna;
• and
• a transceiver configured to transmit a first type of radio frequency signal and a second type of radio frequency signal through the front end system, the transceiver operable in a first mode in which transmissions of the first type of radio frequency signal and the second type of radio frequency signal are staggered over time, and a second mode in which transmissions of the first type of radio frequency signal and the second type of radio frequency signal at least partially overlap in time, the transceiver including a transmit control circuit configured to operate the transceiver in the first mode or the second mode based on comparing a transmit parameter to a threshold.