Birch, Stewart, Kolasch & Birch, LLP
Portable device with subscriber identity cards and method for controlling transmission power thereof
A portable device is provided. The portable device comprises a first wireless module, a second wireless module, a first subscriber identity card coupled to the first wireless module, a second subscriber identity card coupled to the second wireless module and a battery. The first subscriber identity card camps on a cell via the first wireless module. The second subscriber identity card camps on the same cell or a different cell via the second wireless module. A first transmission power of one of the first and second wireless modules is maintained, and a second transmission power of another one of the first and second wireless modules is dynamically adjusted according to a variation in a voltage of the battery.
HTC Corporation
Y H
Y02D H04W
additional inventional
Chung-Cheng Yueh-Hsiang
Tseng Chen