1、手(shou)(shou)(shou)機(ji)(ji)與(yu)電池的接(jie)觸不良，會造(zao)(zao)成(cheng)手(shou)(shou)(shou)機(ji)(ji)自動(dong)(dong)關(guan)(guan)機(ji)(ji)。2、SIM卡(ka)與(yu)手(shou)(shou)(shou)機(ji)(ji)接(jie)觸不良，會造(zao)(zao)成(cheng)手(shou)(shou)(shou)機(ji)(ji)自動(dong)(dong)關(guan)(guan)機(ji)(ji)。3、手(shou)(shou)(shou)機(ji)(ji)主板(ban)電子元件發生(sheng)故(gu)障(zhang)，導致電源供(gong)應不上(shang)，會造(zao)(zao)成(cheng)手(shou)(shou)(shou)機(ji)(ji)自動(dong)(dong)關(guan)(guan)機(ji)(ji)。4、手(shou)(shou)(shou)機(ji)(ji)排線發生(sheng)故(gu)障(zhang)，手(shou)(shou)(shou)機(ji)(ji)屏(ping)幕會不亮，這種情況(kuang)并不是(shi)自動(dong)(dong)關(guan)(guan)機(ji)(ji)，只是(shi)屏(ping)幕不顯(xian)示，但手(shou)(shou)(shou)機(ji)(ji)在正常工作。

1．鋰電(dian)(dian)內的(de)保護電(dian)(dian)路(lu)作用過度(du)靈(ling)敏，因(yin)此電(dian)(dian)流一大就斷電(dian)(dian)。 2．電(dian)(dian)池(chi)(chi)本身已老化。 3．電(dian)(dian)池(chi)(chi)接觸位(wei)的(de)金屬片有污物(wu)，造成電(dian)(dian)源接觸不良。 4．電(dian)(dian)池(chi)(chi)與手(shou)機之間的(de)接合位(wei)容易松動。