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Finding my mobile frequency on my Iphone or Android phone (fieldtest mode)

24 Oct 2016
which frequency mobile phone

Article updated: 20/9/2017

Click here to find your frequency on your Samsung Galaxy Phone

Or

Keep reading to determine what mobile frequency your Iphone is connected to.

Your Iphone will predominatly connect to one frequency in the location around your house.

Once you know this frequency, you can choose the best signal booster for you.

It will be one of these 5 frequencies

  • 800Mhz (Band 20)
  • 900Mhz (Band 8)
  • 1800Mhz (Band 3)
  • 2100Mhz (Band 1)
  • 2600Mhz (Band 7)

(Band numbers are just easy to read lables )

Lets find out which one it is!

Note: please do this test somewhere outside your house, where there is mobile signal.

  1. Make sure mobile data is switched on.
  2. Make sure 3G / 4G is switched on. (settings – general/ mobile data)
  3. Make sure WIFI is switched off.

enablewifi off on iphone

 

Next, lets check your connection.

What symbol do you see on your Iphone?

iphone-icons

  1. No symbol
  2. E = Edge
  3. 3G
  4. 4G or LTE
  5. WIFI

 

 

no-symbol-logoedge-symbol

 

 

 

1 / 2) If you see No Symbol OR the E symbol, you are on GSM / EDGE and your frequency is 900Mhz (Band 8).

 

3g-logo

 

 

 

3) If you see 3G, do the following..

Type:  

*3001#12345#*

into the area you normally use to input a phone number and press call.

You will enter Field Test mode.

fildtestmode

3G will  either be at frequency 900Mhz or  2100Mhz.

  • 900Mhz (Band 8)
  • 2100Mhz (Band 1 )

To find out which one it is..

1) Click “UMTS Cell Environment”

2)Look at the number listed next to:

Downlink Frequency, or UARFCN Number.  It will be something around 10589 or 3088.

put this number into this  this tool to find your frequecny.

umto-tool

lte-logo

 

 

 

4) If you see the 4G or LTE symbol:

Type:  

*3001#12345#*

into the area you normally use to input a phone number and press call.

You will enter Field Test mode.

You should see the Freq Band Indicator or EARFCN or UARFCN number.

earfcn

The Freq Band Indicator is easy!

  • BAND 3  = 1800Mhz.
  • BAND 7 = 2600Mhz
  • BAND 20 = 800Mhz
  • BAND 1 = 2100Mhz
  • BAND 8 = 900Mhz

If you only see a UARFCN or EARFCN number..

Put the number in this tool to find your LTE frequecny.

tool

 

wifi-logo

If you see the WIFI symbol , please switch WIFI OFF as explained above.

 

Conclusion

Now that you know the frequency /band that your phone connects to outside your house, you can select the best signal booster for you.

If you see no symbol or the ‘E’  symbol , we suggest the stellahome900 booster. This one is easy!

If you see the 3G,  H, H+ symbol then you must find out by the method above whether you are at 900Mhz or 2100Mhz.

Finally if you see the ‘4G‘ or ‘LTE’ symbol,  then you must use the method above to find out are you connected to 800 , 1800 or 2600Mhz, and then select the appropriate booster for the list.

Full list of StellaHome Signal boosters:


Finding my frequency on my Samsung Galaxy Phone

 This article will explain the easiest steps you can take  to see what frequency your phone connects to your network on. This is useful information to have, especially if you are looking to purchase a mobile repeater. Knowing your frequency will allow you to select the best suited booster for the job.

Your phone will use one of these 5 frequencies

  • 800Mhz (Band 20)
  • 900Mhz (Band 8)
  • 1800Mhz (Band 3)
  • 2100Mhz (Band 1)
  • 2600Mhz (Band 7)

(Band numbers are just easy to read lables )

Lets find out which one it is!

Here is how the networks and frequencies relate to each other:

  • 4G (aka lte) is either at 800, 1800 or 2600Mhz
  • 3G (aka wcdma) is either at 900 or 2100Mhz
  • GSM is always at 900Mhz

FIELD TESTING ON SAMSUNG GALAXY

  1. Ensure mobile data is switched on:
  2. Ensure WIFI is switched off

android-on-off

2) Type in *#0011# into the area that you would normally use to punch in a telephone number.

You are now in ServiceMode:

Here you should be able to see the Band number directly. It’s that easy!

  • BAND 1 =  2100Mhz.
  • BAND 3  = 1800Mhz.
  • BAND 8 = 900Mhz.
  • BAND 7 = 2600Mhz
  • BAND 20 = 800Mhz

However, sometimes on older phones, the Band is NOT shown and instead, it will  just say GSM900 or WCDMA(900) or WCDMA(2100). This is still easy to read.

  • GSM900 = 900Mhz
  • WCDMA(900) = 900Mhz 
  • WCDMA(2100) = 2100Mhz

(WCDMA is just 3G)

Below are 2 examples. The first phone is in an area where there is 4G, and the second where there is only 3G.
android-lteandroid-wcdma

 

In the first image, you can see the  phone is connected to Band 20. This is 800Mhz, so that’s 4G is at 800Mhz 

In the second image, we are connected to  (WCDMA(900)). The (900) means 900Mhz. The WCDMA means 3G. So that’s 3G at 900Mhz.

Some phones may only show UARFCN numbers, so in both these images I have also highlighted the UARFCN number (in this case, 6300 and 3088 respectively)

umto-tool

If your phone only shows UARFCN  values, you can put these numbers into the UARFCN-to-frequency converter above.

Conclusion

Now that you know the frequency / band that your phone connects to outside your house, you can select the best signal booster for you.

If you see no symbol or the ‘E’ or ‘G’ symbol , we suggest the stellahome900 booster. This one is easy!

If you see the 3G,  H, H+ symbol then you must find out by the method above whether you are at 900Mhz or 2100Mhz.

Finally if you see the ‘4G‘ or ‘LTE’ symbol,  then you must use the method above to find out are you connected to 800 , 1800 or 2600Mhz, and then select the appropriate booster for the list.

Full list of StellaHome Signal boosters:

 

 

 

  • Daniel

    I’m not sure but I have a iPhone and followed the directions above and I have band number 4 with 2140 MHz and 1740 MHz. My band name is AWS-1. Just curious if I’m reading this right becsuse there is not a band 4 for an iPhone above. Any help would be great.

    https://uploads.disquscdn.com/images/8e779c61bcf2046e0818dcb2a71c86c62cba90facfbe9012fbf4a9d2d946d15d.png

    • http://www.stelladoradus.com/ Ferd Browne

      Band 4 is an LTE (4G) band for the frequency 1700Mhz
      This is a USA frequency and is not applicable for Europe.
      StellaDoradus boosters do not amplify USA frequencies.
      AWS looks like a reference to Amazon Web Services…

      • Mont Ahmed

        Helo bro
        Ihave the i phone with freguency band 4 and dosnt work in my country becuse the freguency is 1800,900&2100
        Can you help me

  • pru

    when I enter as suggested *#0011# as directed I get a black screen that says
    Select STACK
    [1] STACK 1
    [2] STACK 2

    stack 1 gives the Lte bad width but stack 2 just says
    [Error]
    As if I don;t have a cell band width which is possible cause my service sucks considering I have an S6

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