juz a thought from my 2 cents opinion...

traditional imam's reminder b4 congregational prayers:
"rapatkan dan luruskan saf"

what i think imam SHOULD say b4 congregational prayers:
"rapatkan dan luruskan saf SEPANJANG WAKTU SOLAT, sila vibrate-kan handphone anda"

or... am i the only one who have this kinda thought? wallahu'alam.