We received a simtrace board a few weeks ago and have been able to successfully use it on a Google NexusOne and iPhone 4s (using a dual SIM adapter). When we have tried it on two different Samsung Galaxy S III devices both were unable to detect the sim card. We verified that we could read the same sim cards when placed in other devices. Has anyone else had success or failures on using recent 3G/4G devices? Are there more tests I could run to isolate the cause? Rupert