P1 will be conducting a scheduled network optimization exercise on 26 April 2010 from 3.00am to 8.00am.
| Affected Date | Affected Areas |
| 26 April 2010, 3:00am -8:00am |
Kedah: Alor SetarSelangor: Ampang, Bangsar, Batu Tiga (Petaling), Cheras, Damansara,Kepong, Klang, KLCC, Kota Kemuning, Pandan Jaya, PJ, Putra Jaya, Selayang, Setapak, Shah Alam, Sri Petaling, Subang Jaya & Sungai Buloh
Pulau Pinang: Georgetown & Penang Island Johor: Johor Bahru, Masai, Skudai & Tampoi |