Hi All,

I am out of ideas and need some help. My wife's Centro started exhibiting a rapid power drain several weeks ago, with a fully-charged battery discharging in 5-6 hours with the phone radio on and ~8 hours even with it off. This happens without making calls or using the wireless network (indeed, I have a bogus username in the Sprint Power Vision settings to prevent any accidental connections because my wife doesn't have a data plan) Here are some of the things I have tried to isolate the problem:

  • I have done a hard reset on the device, leaving it in the state of no software or data loaded on it other than what is in the ROM. I have not even Hotsync'ed it since resetting it. It has had no effect.
  • I have replaced the battery five times now in the last few weeks, also with no effect.
  • I have upgraded the phone's firmware to Sprint 1.07 (from 1.05), also with no effect.
  • I have removed the SD card, also with no effect.
  • I have tried it with IR beam receive on and off (resetting the phone after each change), with no effect.
  • I have disabled network updates in MyTreo (which wouldn't do anything with the phone radio off anyway).
  • I have installed Power Hero and used it to monitor the phone. With the phone radio on, the sleeping power drain is well over 200 mA.
  • Because the phone signal strength is a variable, I ran all other Power Hero monitoring with only Bluetooth on. Results with BT off are nearly identical. Since the phone is off, the network is also off. As you can see from the log below (which goes from full charge to full discharge), the sleeping power drain is well in excess of 100mA, whereas my 755p runs between 0 mA and 3 mA under the same conditions.
I welcome any and all suggestions on what to try next.
Thanks in advance,
Adam

version 1.27, model Centro
3/28/10 3:40:28, 0.00%, 3.4mAH, 3.79v, -dBm, None, Wake
3/28/10 3:40:28, 0.00%, 3.4mAH, 3.79v, -dBm, None, Power Hero activated
3/28/10 3:40:28, 0.00%, 3.4mAH, 3.79v, -dBm, None, Reset
3/28/10 3:40:09, 0.00%, 9.9mAH, 3.23v, -dBm, None, Sleep
3/28/10 3:39:39, 0.00%, 12.1mAH, 3.24v, -dBm, None, Wake
3/28/10 3:36:45, 0.00%, 23.7mAH, 3.35v, -dBm, None, Sleep
3/28/10 3:36:37, 4.00%, 63.0mAH, 3.40v, -dBm, BT, Wake
3/28/10 3:36:36, 5.00%, 76.7mAH, 3.47v, -dBm, BT, Drain 164mA
3/28/10 3:31:36, 6.00%, 90.4mAH, 3.51v, -dBm, BT, Drain 164mA
3/28/10 3:26:36, 8.00%, 104.2mAH, 3.55v, -dBm, BT, Drain 149mA
3/28/10 3:21:36, 9.00%, 116.6mAH, 3.56v, -dBm, BT, Drain 175mA
3/28/10 3:16:55, 9.00%, 117.0mAH, 3.56v, -dBm, BT, Sleep
3/28/10 3:16:45, 9.00%, 117.3mAH, 3.53v, -dBm, BT, Background mode
3/28/10 3:16:37, 9.00%, 117.9mAH, 3.56v, -dBm, BT, Wake
3/28/10 3:16:36, 11.00%, 131.3mAH, 3.58v, -dBm, BT, Drain 164mA
3/28/10 3:11:36, 12.00%, 145.0mAH, 3.59v, -dBm, BT, Drain 157mA
3/28/10 3:06:36, 13.00%, 158.1mAH, 3.60v, -dBm, BT, Drain 160mA
3/28/10 3:01:36, 14.00%, 171.6mAH, 3.60v, -dBm, BT, Drain 160mA
3/28/10 2:56:36, 16.00%, 185.0mAH, 3.61v, -dBm, BT, Drain 160mA
3/28/10 2:51:36, 17.00%, 198.4mAH, 3.62v, -dBm, BT, Drain 157mA
3/28/10 2:46:36, 18.00%, 211.5mAH, 3.63v, -dBm, BT, Drain 160mA
3/28/10 2:41:36, 20.00%, 224.9mAH, 3.64v, -dBm, BT, Drain 157mA
3/28/10 2:36:36, 21.00%, 238.0mAH, 3.66v, -dBm, BT, Drain 157mA
3/28/10 2:31:36, 22.00%, 251.1mAH, 3.66v, -dBm, BT, Drain 160mA
3/28/10 2:26:36, 24.00%, 264.5mAH, 3.67v, -dBm, BT, Drain 157mA
3/28/10 2:21:36, 25.00%, 277.6mAH, 3.67v, -dBm, BT, Drain 157mA
3/28/10 2:16:36, 26.00%, 290.7mAH, 3.68v, -dBm, BT, Drain 157mA
3/28/10 2:11:36, 28.00%, 303.8mAH, 3.68v, -dBm, BT, Drain 157mA
3/28/10 2:06:36, 29.00%, 316.9mAH, 3.69v, -dBm, BT, Drain 157mA
3/28/10 2:01:36, 30.00%, 330.0mAH, 3.69v, -dBm, BT, Drain 157mA
3/28/10 1:56:36, 32.00%, 343.2mAH, 3.70v, -dBm, BT, Drain 157mA
3/28/10 1:51:36, 33.00%, 356.3mAH, 3.71v, -dBm, BT, Drain 153mA
3/28/10 1:46:36, 34.00%, 369.0mAH, 3.71v, -dBm, BT, Drain 157mA
3/28/10 1:41:36, 35.00%, 382.2mAH, 3.71v, -dBm, BT, Drain 153mA
3/28/10 1:36:36, 37.00%, 394.9mAH, 3.71v, -dBm, BT, Drain 157mA
3/28/10 1:31:36, 38.00%, 408.0mAH, 3.72v, -dBm, BT, Drain 157mA
3/28/10 1:26:36, 39.00%, 421.2mAH, 3.72v, -dBm, BT, Drain 157mA
3/28/10 1:21:36, 41.00%, 434.3mAH, 3.72v, -dBm, BT, Drain 153mA
3/28/10 1:16:36, 42.00%, 447.0mAH, 3.73v, -dBm, BT, Drain 153mA
3/28/10 1:11:36, 43.00%, 459.8mAH, 3.73v, -dBm, BT, Drain 157mA
3/28/10 1:06:36, 45.00%, 472.9mAH, 3.73v, -dBm, BT, Drain 157mA
3/28/10 1:01:36, 46.00%, 486.0mAH, 3.73v, -dBm, BT, Drain 153mA
3/28/10 0:56:36, 47.00%, 498.8mAH, 3.74v, -dBm, BT, Drain 153mA
3/28/10 0:51:36, 48.00%, 511.6mAH, 3.75v, -dBm, BT, Drain 153mA
3/28/10 0:46:36, 50.00%, 524.4mAH, 3.74v, -dBm, BT, Drain 153mA
3/28/10 0:41:36, 51.00%, 537.2mAH, 3.75v, -dBm, BT, Drain 157mA
3/28/10 0:36:36, 52.00%, 550.3mAH, 3.76v, -dBm, BT, Drain 153mA
3/28/10 0:31:36, 54.00%, 563.1mAH, 3.76v, -dBm, BT, Drain 153mA
3/28/10 0:26:36, 55.00%, 575.9mAH, 3.77v, -dBm, BT, Drain 153mA
3/28/10 0:21:36, 56.00%, 588.7mAH, 3.78v, -dBm, BT, Drain 153mA
3/28/10 0:16:36, 57.00%, 601.5mAH, 3.78v, -dBm, BT, Drain 153mA
3/28/10 0:11:36, 59.00%, 614.3mAH, 3.79v, -dBm, BT, Drain 153mA
3/28/10 0:06:36, 60.00%, 627.1mAH, 3.79v, -dBm, BT, Drain 48mA
3/28/10 0:01:36, 60.00%, 631.1mAH, 3.79v, -dBm, BT, Drain 258mA
3/27/10 23:56:36, 62.00%, 652.7mAH, 3.80v, -dBm, BT, Drain 149mA
3/27/10 23:51:36, 63.00%, 665.1mAH, 3.80v, -dBm, BT, Drain 153mA
3/27/10 23:46:36, 65.00%, 677.9mAH, 3.81v, -dBm, BT, Drain 153mA
3/27/10 23:41:36, 66.00%, 690.7mAH, 3.82v, -dBm, BT, Drain 149mA
3/27/10 23:36:36, 67.00%, 703.2mAH, 3.83v, -dBm, BT, Drain 153mA
3/27/10 23:31:36, 68.00%, 716.0mAH, 3.84v, -dBm, BT, Drain 149mA
3/27/10 23:26:36, 70.00%, 728.5mAH, 3.85v, -dBm, BT, Drain 149mA
3/27/10 23:21:36, 71.00%, 741.0mAH, 3.86v, -dBm, BT, Drain 153mA
3/27/10 23:16:36, 72.00%, 753.7mAH, 3.86v, -dBm, BT, Drain 149mA
3/27/10 23:11:36, 73.00%, 766.2mAH, 3.88v, -dBm, BT, Drain 149mA
3/27/10 23:06:36, 75.00%, 778.7mAH, 3.88v, -dBm, BT, Drain 149mA
3/27/10 23:01:36, 76.00%, 791.2mAH, 3.89v, -dBm, BT, Drain 149mA
3/27/10 22:56:36, 77.00%, 803.7mAH, 3.89v, -dBm, BT, Drain 146mA
3/27/10 22:51:36, 79.00%, 815.8mAH, 3.91v, -dBm, BT, Drain 149mA
3/27/10 22:46:36, 80.00%, 828.3mAH, 3.91v, -dBm, BT, Drain 146mA
3/27/10 22:41:36, 81.00%, 840.5mAH, 3.92v, -dBm, BT, Drain 149mA
3/27/10 22:36:36, 82.00%, 853.0mAH, 3.92v, -dBm, BT, Drain 149mA
3/27/10 22:31:36, 83.00%, 865.4mAH, 3.94v, -dBm, BT, Drain 142mA
3/27/10 22:26:36, 84.00%, 877.3mAH, 3.95v, -dBm, BT, Drain 149mA
3/27/10 22:21:36, 86.00%, 889.8mAH, 3.95v, -dBm, BT, Drain 146mA
3/27/10 22:16:36, 87.00%, 901.9mAH, 3.96v, -dBm, BT, Drain 149mA
3/27/10 22:11:36, 88.00%, 914.4mAH, 3.97v, -dBm, BT, Drain 146mA
3/27/10 22:06:36, 89.00%, 926.6mAH, 3.99v, -dBm, BT, Drain 146mA
3/27/10 22:01:36, 91.00%, 938.8mAH, 4.00v, -dBm, BT, Drain 146mA
3/27/10 21:56:36, 92.00%, 950.9mAH, 4.01v, -dBm, BT, Drain 142mA
3/27/10 21:51:36, 93.00%, 962.8mAH, 4.02v, -dBm, BT, Drain 146mA
3/27/10 21:46:36, 94.00%, 975.0mAH, 4.03v, -dBm, BT, Drain 142mA
3/27/10 21:41:36, 95.00%, 986.8mAH, 4.04v, -dBm, BT, Drain 146mA
3/27/10 21:36:36, 96.00%, 999.0mAH, 4.05v, -dBm, BT, Drain 142mA
3/27/10 21:31:36, 98.00%, 1010.8mAH, 4.07v, -dBm, BT, Drain 142mA
3/27/10 21:26:36, 99.00%, 1022.7mAH, 4.08v, -dBm, BT, Drain 142mA
3/27/10 21:21:36, 99.99%, 1034.5mAH, 4.09v, -dBm, BT, Drain 101mA
3/27/10 21:16:36, 99.99%, 1043.0mAH, 4.11v, -dBm, BT, Drain 63mA
3/27/10 21:13:09, 99.99%, 1043.0mAH, 4.11v, -dBm, BT, Sleep
3/27/10 21:12:59, 99.99%, 1043.3mAH, 4.10v, -dBm, BT, Background mode
3/27/10 21:12:46, 99.99%, 1044.2mAH, 4.09v, -dBm, BT, App start