Dear Apple Community,

I am wondering if anyone have experienced something that I encountered.

To trace back, what happened was that I had an iPhone SE and somehow it does not connects with the carrier bundle that It would have on iPhone 6s (on iPhone 6s it shows Telkomsel 18.0) on mine it shows Carrier 34.0.

With that condition, no issues were found and the phone works as it should be, along with the personal hotspot feature. What I need to do was just manually enter APN settings for Internet, MMS, and Personal Hotspot (everything is available under Cellular > Cellular Data Network settings.

Problem arises when I switched my phone from iPhone SE (iOS 12.1) into iPhone 6s.

As I usually do with my previous iPhone (5s to 7, et cetera), I just back up everything on itunes, fresh restore the iPhone 6s with iOS 12.1 and restore the backup from iPhone SE.

Everything works flawlessly, and no issues were found until I use my phone on the road which I always did, use it as modem (Instant Hotspot) through my MacBook.

This shows on mine:

The exclamation mark shows on the wifi icon, and later I found out that the personal hotspot on my iPhone does not work anymore.

As it shown on every single support page, it should've been solved by manually entering apn settings, but here is what I found:

After MMS part, I cannot find 'Personal Hotspot Part', therefore, I cannot manually enter APN settings for Personal Hotspot.

while here on the menu, Personal Hotspot option is available..

I think the culprit would be 'Carrier 34.0' whereas it should have been 'Telkomsel 18.0'.

I have tried manually updating IPCC through iTunes, but no luck.

Please, anyone have ever encountered this?

Thank you!

iPhone 6s, iOS 12.1

Posted on

Carrier Bundles provide a way to organize all customizations related to carriers in one place. These include voice mail numbers, MMS and APN settings etc.

For users on carriers other than the Apple's official partners, carrier bundles allow to configure important settings such as APN and enable features like MMS and tethering.

On the device side, carrier bundles are stored in the following directories:

• /var/mobile/Library/Carrier Bundles/ - bundles downloaded via iTunes.
• /System/Library/Carrier Bundles/ - bundles provided with the firmware image. Starting with iOS 4.2, carrier bundles are stored in a subfolder of this path.

If two bundles with the same name exist in both paths, the one on user partition takes preference. This allows Apple to update carrier bundles without releasing a whole new OS.

On a computer that has downloaded carrier bundle updates, they are stored in the following directories:

• ~/Library/iTunes/iPhone Carrier Support/ - this folder will not exist if iTunes hasn't downloaded any carrier updates

• 2Enabling .ipcc support in iTunes

Structure

Carrier bundles are ZIP archives with .ipcc extension. They are named after the carrier and the country they are for (for example, MyCarrier_au.ipcc) They contain the mandatory Payload folder that includes the bundle itself and the symlink:

Enabling .ipcc support in iTunes

By default, iTunes allows only carrier bundle updates from Apple. However, when the 'carrier-testing' preference is enabled, .ipcc files can be loaded from the user's hard drive by clicking either 'Check for Updates' or 'Restore' button while holding Shift (on Windows) or Option key (on Mac). Kumkum bhagya watch online.

Mac OS X

1. Quit iTunes.

2. Open Terminal and paste the following command:

Windows

Enter the following in a command line, the Start menu search box or the Run dialog:

Note: this command just enables the preference and exits, so iTunes won't open if it's not already running.

iOS 3.1 Changes

As of iOS 3.1b1, APN settings are now being signed to prevent tampering/modification by users.This has been implemented to stop users bypassing the carrier's designated APN for tethering that may require payment for access.This is also a concern for users of carriers that do not officially offer MMS or Tethering services for users at all.This signature-check can be circumvented by patching commcenter.

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Only the APN settings are being signed; other settings can still be modified without needing to patch commcenter.

iOS 4.x Changes

One of the new 'features' in iOS 4 is the addition of over-the-air carrier updates. Carriers can now push updated settings over the air without having to tether your device to a computer to poll for updates.All carrier bundle settings are now signed, not just the APN settings. To circumvent this, commcenter must now be patched.The bit-mask for APN settings has also changed quite significantly.

Type Mask

Each APN in the carrier.plist has a numeric type-mask. It is bitmask (combination of flags) that designates what the APN should be used for (eg. phone data, tethering, visual voicemail, MMS, or a combination). This table shows what each-type mask designates an APN for.

For example, 55 = 1+2+4+48 means 'Tethering, MMS, VVM, Data'

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