MANHASSET, N.Y. — A testing study focusing on popular 3G handsets by Signals Research Group (SRG) found dramatic differences in the ability of different phones to reliably make and maintain calls. The study reached that conclusion despite the fact that all of the phones in the reliability tests passed industry-standard conformance testing needed for certification.
The study also looked at the performance of 3G chip sets from Ericsson Mobile Platforms, Icera, Infineon, InterDigital, Motorola, NEC, Nokia and Qualcomm.
Performance throughput results showed major differences in data-rate throughput for various chip sets under real-world, network conditions.'In some cases, the performance difference was in excess of 30 percent of conformance standard specs.
Like the throughput test results, call reliability varied significantly among commercial handsets.'Handsets tested for reliability included the iPhone 3G (pre- and post-firmware fixes), Sony Ericsson, Motorola, LG and RIM's......
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