3G UMTS Frequency Bands
Cambodia Advance Communications Ltd or "CADCOMMS" is one of the leading telecommunications services providers in Cambodia. CADCOMMS has been in operation in Cambodia since 2008 when it launched a 3G network branded as qb. The company is privately owned.
qb operates its 3G UMTS network supporting HSPA+ over the B1 (2100 MHz) band, with the company holding 10 MHz of paired spectrum. qb's physical network is very small so in 2016 the company established a roaming agreement with Cellcard across both their 2G and 3G networks.