My phone doesn't charge other devices when its battery is low
Applicable products：
HUAWEI Mate40 lite E，HUAWEI P30 Pro(single sim card 8gb+256gb、dual sim card 8gb+512gb、single sim card 6gb+128gb、dual sim card 8gb+256gb、single sim card 8gb+128gb、dual sim card 8gb+128gb)，PORSCHE DESIGN HUAWEI Mate RS，HUAWEI Mate 30(dual sim card 8gb+256gb、dual sim card 8gb+128gb)，PORSCHE DESIGN HUAWEI Mate 20 RS，HUAWEI Mate 30 Pro(dual sim card 8gb+256gb、dual sim card 8gb+128gb)，HUAWEI Mate 30 Pro 5G(dual sim card 8gb+256gb、dual sim card 8gb+128gb)，HUAWEI Mate 20 Pro，HUAWEI Mate 40 Pro(single sim card 8gb+256gb、dual sim card 8gb+256gb)，HUAWEI Y9s(huawei p smart pro dual sim card 6gb+128gb)，HUAWEI P smart Pro，HUAWEI P40 Pro+(dual sim card 8gb+512gb)，HUAWEI P40 Pro(single sim card 8gb+256gb、dual sim card 8gb+256gb)
Applicable system:
Unrelated to OS version
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| My phone doesn't charge other devices when its battery is low |
When your phone's battery is lower than 20%, wireless reserve charging is automatically disabled, to ensure normal operations and charging performance.
Thanks for your feedback.