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Any correlation between 4S battery and build week?
- Thread starter 3460169
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Are you sure the first 3 numbers are the build week? This tool, which I believe was made for older iPhones, seems to indicate the first two characters actually identify the build location. For example:
"C2" = "China"
"C3" = "China"
"DN" = "China, Chengdu - Foxconn"
"DM" = "China - Foxconn"
"DR" = (unrecognized)
And this tool does somehow know about the production date despite changing any of the first 3 characters:
"Production Week: 40 (October)"
"Production Year: 2011"
I haven't figured out yet the year and week decoding. Changing the 5th character changes the week, but not in a predictable way (yet).
"C2" = "China"
"C3" = "China"
"DN" = "China, Chengdu - Foxconn"
"DM" = "China - Foxconn"
"DR" = (unrecognized)
And this tool does somehow know about the production date despite changing any of the first 3 characters:
"Production Week: 40 (October)"
"Production Year: 2011"
I haven't figured out yet the year and week decoding. Changing the 5th character changes the week, but not in a predictable way (yet).
C39. After having draining issues I disconnected the 3G Microcell in my home. I'm now getting battery usage on par with my 4. Yesterday when I was connected to the Microcell I took the phone off the charger at 100% at around 8:30am. At 5pm I was at 35% with about 6hrs of standby and 3hrs of usage (usage consisted of texting, a couple of 5 minute calls, twitter, and Facebook). Today, not connected to the Microcell, I'm at 64% battery with the same usage as yesterday.
Wow good find.
Definitely not certain about those first three characters; it was however suggested by this thread, which of course is not an authoritative source of information but seemed reasonable.
By that tool, my phone was built last week, same week it was shipped!
sorry to ask but how are you guys getting these "C39" etc numbers? i am confused
my first three serial numbers are letters: DNP
c39 with the same problems.
Thank you for all who posted.. I thought i was just going crazy, or had a bum phone.
I turned the percentage off...it stare at it all day and watch it drain. its very distracting.
Thank you for all who posted.. I thought i was just going crazy, or had a bum phone.
I turned the percentage off...it stare at it all day and watch it drain. its very distracting.
lol same here. i just get paranoid seeing the % drop so i turned it off too. i prefer the graph as it shows less drastic changes. i only turn it back on to % as it gets close to dying so i can accurately judge the time i have left otherwise i will go bonkers and keep running power consumption calculations!
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judging by the fact that there is consistent "bad" serial number it is hit and miss randomly i would say that there is no distinct correlation but it was a worthy attempt. it is not like the screen model thing on the mbp's. i think this is dependent on user settings/software more than the build date. cool thread though, it is almost like an easter egg checking these things
I read somewhere that deleting all your mail accounts and re-adding them fixes the battery drain problem ...
also
https://forums.macrumors.com/threads/1261564/
also
https://forums.macrumors.com/threads/1261564/