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<h1>GCF settings - Applicability</h1>
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<p>Some phone models requires GCF settings to be applied in order to complete the unlock, below is the list. You may also need to use this feature in order to open the service menu. To access it you can either tap on "GCF Settings" button on the main screen (Fig. 1), or access such setting from the three dots menu button on top right of the app and then tapping on "GCF Setting" menu item (Fig. 2).</p>
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<p>Please follow these steps only if you will use a GSM SIM (e.g. T-Mobile, AT&amp;T etc...), in case you will use another CDMA SIM (like Verizon for example) then skip these steps.</p>
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<p>If you applied GCF Setting and you want to revert it in order to use a CDMA SIM (to return back to Sprint for example) just follow the same steps but chose "GCF OFF" or "SETTING CANCELLATION" instead in the latest selection.</p>
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<p>If your phone needs the GCF settings to be applied please open such menu using one of the two below ways (Fig. 1 or 2).</p>
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<figure class="wp-block-image"><img src="https://idoneapps.com/img/GCFsettings.png" alt="GCF Settings 01"/></figure>
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<figure class="wp-block-image"><img src="https://idoneapps.com/img/GCFsettings_02.png" alt="GCF Settings 02"/></figure>
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<p><strong>Models that require GCF Settings</strong></p>
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<p>MEGA SPH-L600</p>
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<p>Note 3 SM-N900P</p>
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<p>Note 4 SM-N910P</p>
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<p>Note Edge SM-N915P</p>
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<p>S4 SPH-L720</p>
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<p>S4 Triband SPH-L720T</p>
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<p>S5 SM-G900P</p>
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<p>S5 Sport SM-G860P</p>
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<p>If your phone is rooted you will see the&nbsp;<strong>Service Menu</strong>&nbsp;direclty (Fig. 3).<br>If your phone is NOT rooted you will see the&nbsp;<strong>IOTHiddenMenu</strong>&nbsp;(Fig. 4), tap on&nbsp;<strong>TestMode Menu</strong>&nbsp;to open the&nbsp;<strong>Service Menu</strong>(Fig. 5).</p>
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<figure class="wp-block-image"><img src="https://idoneapps.com/img/servicemenu_01.png" alt="Service Menu 01"/></figure>
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<figure class="wp-block-image"><img src="https://idoneapps.com/img/iothiddenmenu.png" alt="IOTHidden Menu"/></figure>
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<figure class="wp-block-image"><img src="https://idoneapps.com/img/servicemenu_02.png" alt="Service Menu 02"/></figure>
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<p>From Service Menu follow the steps below related to your phone model.</p>
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<h2>1. GCF settings for Note3, Note4/Edge, S5, and S5 variants</h2>
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<p>Tap the GCF Settings Button or tap on the app menu, then tap on GCF Settings dropdown menu item, then tap on these options in the following order:</p>
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<p>[2] UE Setting &amp; Info &gt;</p>
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<p>[1] Setting &gt;</p>
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<p>[1] Protocol &gt;</p>
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<p>[4] GCF &gt;</p>
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<p>[1] GSM/(E)GPRS/WCDMA GCF ON</p>
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<p><em>It will say "success", please reboot via the phone’s power menu after the confirmation.</em><br><strong>NOTE:</strong>&nbsp;To turn GCF OFF please select [2] CANCEL SETTING (GCF OFF) as last option.</p>
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<h2>2. GCF Setting for Mega, S4 and S4 Triband</h2>
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<p>Tap the GCF Settings Button or tap on the app menu, then tap on GCF Settings dropdown menu item, then tap on these options in the following order:</p>
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<p>[1] UMTS &gt;</p>
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<p>[1] DEBUG SCREEN &gt;</p>
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<p>[6] PHONE CONTROL &gt;</p>
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<p>[7] NETWORK CONTROL &gt;</p>
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<p>[1] GCF &gt;</p>
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<p>[1] GSM/(E)GPRS/WCDMA REL8. (This item set GCF ON).</p>
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<p><em>It will say "success", please reboot via the phone’s power menu after the confirmation.</em><br><strong>NOTE:</strong>&nbsp;To turn GCF OFF please select [5] SETTING CANCELLATION as last option.</p>
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<p>If above not working, here other option</p>
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<p>1. Dial *#0011# and in the service menu do the following.<br>2. Click "Menu" then "Key input" then input Q then press "Ok".<br>3. Click "Menu" then "Back".<br>4. Click "Menu" then "Key input" then input 0000 then click "Ok".After these steps Hidden menu should open. In Hidden menu, depending on available options, try to do the following:I.<br>Press UMTS<br>Press DEBUG SCREEN<br>Press PHONE CONTROL<br>Press NETWORK CONTROL<br>Set GCF to ONII.<br>Press [2] UE SETTING &amp; INFO<br>Press [1] SETTINGS<br>Press [4] GCF<br>Set [1] GSM/(E)GPRS/WCDMA GCF to ONAfter these actions go to Settings -&gt; Mobile Networks and Set Network Mode to Automatic, or GSM</p>
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<p>From https://idoneapps.com/</p>
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