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G700-U10 Smartphone
Maintenance Manual
Circuit Analysis
The 4-in-1 chip MT6628Q provides the Wi-Fi function. The Wi-Fi module in this chip uses
the SDIO interface for signal transmission. The Wi-Fi antenna connects to the antenna on the
phone housing through the spring J2301. The Wi-Fi module and Bluetooth module share the
antenna. The external power supply provides the VBAT and 2.8 V voltages to the MT6628Q.
The LDO inside the MT6628Q provides a 1.7 V voltage for the on-chip modules.
Figure 10-59 MT6628Q structure
Issue 1.0 (2013-07-22)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
10 Circuit and Failure Analysis
85
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