Use the Timer or Stopwatch

Applicable products： HUAWEI Mate 20 X(dual sim card 6gb+128gb)，HUAWEI P30(single sim card 6gb+128gb、dual sim card 6gb+128gb、dual sim card 8gb+128gb)，HUAWEI P30 Pro(single sim card 8gb+256gb、dual sim card 8gb+512gb、single sim card 6gb+128gb、dual sim card 6gb+128gb、dual sim card 8gb+256gb、single sim card 8gb+128gb、dual sim card 8gb+128gb)，HUAWEI Mate 20 Pro(dual sim card 6gb+128gb、single sim card 6gb+128gb)，PORSCHE DESIGN HUAWEI Mate 30 RS，HUAWEI Mate 30(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 30 Pro(dual sim card 8gb+256gb、dual sim card 8gb+128gb)，PORSCHE DESIGN HUAWEI Mate 20 RS(dual sim card 8gb +256gb)，HUAWEI Mate 40 Pro(single sim card 8gb+256gb、dual sim card 8gb+256gb)，HUAWEI nova 8i(dual sim card 6gb+128gb)，HUAWEI nova 9(dual sim card 8gb+128gb)，HUAWEI MediaPad M6(10.8 inches wifi-only 4gb+128 gb、10.8 inches lte 4gb+64gb、10.8 inches lte 4gb+128gb、10.8 inches wifi-only 4gb+64gb)，HUAWEI Mate 20(single sim card 4gb+128gb、dual sim card 4gb+128gb)，HUAWEI nova 5T(dual sim card 6gb+256gb、dual sim card 6gb+128gb、single sim card 6gb+128gb、single sim card 6gb+256gb)，HUAWEI Mate 20 X (5G)(dual sim card 8gb+256gb)，HUAWEI MatePad Pro(10.8 inches wifi 8gb+256gb、10.8 inches lte 6gb+128gb、10.8 inches wifi only 6gb+128gb、10.8 inches wifi 6gb+128gb、10.8 inches wifi only 8gb+256gb、10.8 inches lte 8gb+256gb)，HUAWEI Mate Xs，HUAWEI P40(single sim card 8gb+128gb、dual sim card 8gb+128gb)，HUAWEI P40 Pro+(dual sim card 8gb+512gb)，HUAWEI MatePad Pro 5G(10.8 inches 8gb+512gb、10.8 inches 8gb+256gb)，HUAWEI P40 Pro(single sim card 8gb+256gb、dual sim card 8gb+256gb)