3G Performance Hit with 2.1

[AAEBoiler]

I just updated my Eris to 2.1 on Monday and ever since then I haven't been getting the same 3G performance (i.e signal strength). Places where I usually saw 3 bars, I'm only seeing 1 ... or less.

Has anyone else experienced this?

 

[spanky412]

problem with 2.1 started with leaks stayed with ota

have zero bars sometime and still able to make calls and get data

 

[BlazeD OnE]

Very known problem. Same with 50% time without signal issue. and hopefully not the

audio loss problems. Alothough you see only 1 bar. check to see what your signal -dBm

is, the display is off, and even though it showns low bars you will have good service.

 

[AAEBoiler]

check to see what your signal -dBm is

My signal strength is around -100 dBm ... I'm assuming that's bad. LOL!

 

[Frisco]

My signal strength is around -100 dBm ... I'm assuming that's bad. LOL!

Not bad; terrible.

The signal strength number in the menu is generally more accurate then the bars in the notification area display in 2.1.

 

[mikey517]

Not bad; terrible.

The signal strength number in the menu is generally more accurate then the bars in the notification area display in 2.1.

Frisco, what would be a good reading? I currently have -88 dBm in my office in a concrete building. Using Speedtest.net, i get a speed of approximately 1MB. At home i have gotten speeds of 2 MB on 3G

 

[Frisco]

Frisco, what would be a good reading? I currently have -88 dBm in my office in a concrete building. Using Speedtest.net, i get a speed of approximately 1MB. At home i have gotten speeds of 2 MB on 3G

The lower the -dbm number the faster the carrier signal between your device and the tower.

I see -53 a lot, and -49 at best.. that's indoors and outdoors.

Right now it's sitting at -81 (I'm in a basement) and I've got two bars; browsing, calling and using texting seem fast enough, although I understand that around the high -80s we're getting about a "dial up" speed as far as measured numbers go.

 

[AAEBoiler]

Crud! I wish I had made a note of my signal strength before I updated to 2.1!

 

[Frisco]

Crud! I wish I had made a note of my signal strength before I updated to 2.1!

Forgetting the bars and the device's stated -dbm data, how is the device working for calls, messaging, browsing, etc?

 

[AAEBoiler]

I'm having no problem messaging but I don't think I've taken any calls since I updated on Monday/Tuesday. Browsing seems slightly slower than before.

I guess I'm mostly concerned about battery drainage while my phone struggles to do work with a low signal. I've resorted to turning off 3G unless I need it (for browsing, maps, Facebook, Twitter, weather, etc.).

 

[Peaser]

My signal strength is around -100 dBm ... I'm assuming that's bad. LOL!

Well I'm confused. I read in another thread that -86 was a good reading! Can someone clarify?

 

[Merlin615]

dbm is a measure of signal strength not a direct correlation of speed, however the further away from zero the worse the signal, kinda like moving away from a tv tower(for those that remember using the old rabbit ears, for every 3dbm difference the signal either double or cuts in half so -86dbm is twice as bad as -83dbm.

 

[Peaser]

dbm is a measure of signal strength not a direct correlation of speed, however the further away from zero the worse the signal, kinda like moving away from a tv tower(for those that remember using the old rabbit ears, for every 3dbm difference the signal either double or cuts in half so -86dbm is twice as bad as -83dbm.

So what number is a good number....?

 

[Merlin615]

So what number is a good number....?

While I haven't observed a solid number i get goo reception at work, in town, by a windows and I'm currently getting between -71 and -76 and on 1.5 that was 4-5 bars with good 3G, if we get more numbers we can get a range and figure a mean good number.

 

[Frisco]

Well I'm confused. I read in another thread that -86 was a good reading! Can someone clarify?

Take a look at the table at this site:

RF Power Values [Wireless, LAN (WLAN)] - Cisco Systems

 

[mikey517]

Take a look at the table at this site:

RF Power Values [Wireless, LAN (WLAN)] - Cisco Systems

My head just exploded !!
Wow.....

 

[Merlin615]

The average cell tower transmits at +50 to +60dbm, keep in mind this is straight off the antenna, researching to see if I can find the average signal degradation for cell signals.