LG Optimus 7 E900 Unlock 850 Mhz Band?

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corporateexpress

Member

Mar 10, 2012

5

0

• Mar 10, 2012

• #1

Hey all,

I just realized the E900 and E900h have the same modem. The problem with the E900 is that the 850Mhz band is locked. Is there any way to unlock the 850 mhz band? I need it for better reception with ATT.

 

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Etaduck

Senior Member

Sep 11, 2010

130

10

Dallas, TX

• Mar 10, 2012

• #2

On the e900 in the MFG menu I have the option to select both cmda and gsm 850mhz band.

I did load the att apn and developer unlock my phone, but I never looked for that band before so you might not need to do those things.

 

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corporateexpress

Member

Mar 10, 2012

5

0

• Mar 10, 2012

• #3

I just developer unlocked my phone. However the 850 Mhz WCDMA band is still locked. Can you receive WCDMA 850?



I'm wondering if one can flash an lg e900 with an e900h rom. By doing this, will this enable the 850Mhz band?

Thanks

 

Last edited by a moderator: Mar 11, 2012

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corporateexpress

Member

Mar 10, 2012

5

0

• Mar 11, 2012

• #4

Can I flash an E900H rom onto an E900?

 

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Etaduck

Senior Member

Sep 11, 2010

130

10

Dallas, TX

• Mar 11, 2012

• #5

I don't know about flashing the e900 rom, I have the stock vodophone rom updated to mango.

and I have 850, 1900 and 2100 bands displayed in my engineering menu > modem options > band selections. Not sure what to tell you.

 

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corporateexpress

Member

Mar 10, 2012

5

0

• Mar 11, 2012

• #6

@Etaduck

Yes I have the 850mhz WCDMA option in MFG. However it is not picking up an actual 850 WCDMA signal. Is your phone picking up 850 for 3g?

 

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Etaduck

Senior Member

Sep 11, 2010

130

10

Dallas, TX

• Mar 11, 2012

• #7

I select 850 wcdma restart and get 3g / h depending on where I'm located, but I usually just leave it on wmda automatic

I'm not sure if there is any other way to test what band I'm using, but I'm assuming that selecting it from the MFG menu would be using the 850 band.

 

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corporateexpress

Member

Mar 10, 2012

5

0

• Mar 11, 2012

• #8

can you tell me the exact configuration of your phone? Did you use MFG or Network setup? I desperately need the band as 3g in my area is 850.

 

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Barney909

Member

Mar 12, 2012

5

0

• Mar 12, 2012

• #9

AFAIK mobile devices need different communication hardware to physically access some frequencies.

Whilst there may be a software switch to activate access to a frequency.. that does not mean that the unit will contain the hardware to do so.

If I am wrong on this I would appreciate advice.

EDIT: More on this topic and an aswer similar to above here...
http://xdaforums.com/showthread.php?t=1067830

 

Last edited: Mar 12, 2012

S

Saso_Mange

Member

Feb 19, 2011

6

1

• Sep 30, 2012

• #10

E900 and E900h have different hardware conf, most likely different flash ic so its not recomended to cross flash it.