Fixed Dialing Number (FDN) is a feature of a phone's SIM card that can restrict outgoing calls only to a special list of numbers, or to numbers that match a certain template (like 0793519xx or 069xxx906). Incoming and emergency calls are not affected by this option, so 911 and 112 are always reachable.
As a parent, you can control the phone numbers your children can dial. For example, you can configure the SIM such that the kid can call only you, your spouse and your other child.
A business can use FDN as a security measure to prevent employees from dialing numbers outside the company from their corporate-paid account.
Fixed dialing is activated by entering PIN2. This prevents others from changing or disabling the FDN list. This number is usually distributed with the card itself. If you can’t find it, contact the mobile operator.
You can enable FDN on your phone, but editing the list of fixed dialing numbers can be cumbersome if you use the phone’s tiny keypad.
SIM reader with SIM Manager can enable FDN and edit the fixed dialing numbers much faster and easier.
The first thing you have to do is add the numbers you want to be able to dial. You can write them from scratch or copy them from your contacts.
Click Enable FDN feature in the option SIM menu:
FDN is now enabled on your SIM card. No outgoing calls can be made to any numbers, other than those in the list of fixed dialing numbers, or emergency numbers. Even if the SIM card is plugged into a different phone - calls to numbers other than the allowed ones are not possible.
Things to keep in mind:
If you use Google's two-step verification feature, you will stumble upon an authentication error with SIM Manager, when attempting to synchronize your SIM with the online phonebook.
Two-step authentication is something that can easily slip out of your mind, so you may think that the problem is with your password, or with the software. After repeated attempts to synchronize your phonebook, you just give up (and maybe blame it on SIM Manager)
To fix this, you have to create an application-specific password in your Google account settings, and use that password with SIM Manager.
Log onto your Gmail account and click account settings
Edit your two-step verification settings
Click Manage application-specific passwords
Generate a password for SIM Manager
Use this password with SIM Manager
That's it. Have fun synchronizing your contacts!
p.s. the password in the screenshot has been changed, don't try to use it ;-)
The SMSC stands for "SMS center", it is a system that manages the traffic of SMS (texts) in a mobile network. That's the place where the messages are kept for a while if they cannot be delivered instantly to the recipient.
Normally none of us has to be aware of it, because the SMSC is written to the SIM card by the mobile operator, so we don't have to configure anything.
On the file system of the SIM card, the SMS center is stored in EF SMSP (short message service parameters), the full path to the file is 7F10\6F42. The file can be read and updated, if you know PIN1.
The easiest way to change it is with SIM Explorer. It can display the file in a nice, human-readable form.
And if you prefer raw data - you can have that too:
Version 3.1 is about to go public, this story provides details about some of the entries in the changelog.
+ improved SIM card write speed, only updated records are written
+ the .manifest file is now embedded into the program
+ notifications about missing readers can be optionally disabled
+ automatically enable and start the smart card service, if possible
+ detect ActivClient and let people disable it, for it renders the reader unusable
+ gracefully handle AT&T cards that have incomplete USIM phonebooks (no email file)
+ added support for PTT (push to talk) records available on some 3G cards
- fixed the problem of pasting contacts to FDN sections
- addressed issue of a limited number of contacts copied from Google
- Facebook deprecated their contacts API, so the feature is removed
If you sell your product on Amazon, you have to keep an eye on your feedback - a comment left by the buyer after the purchase. This article reflects everything I know about this subject, these tips are distilled from personal experience on the Amazon marketplace.
I am not a guru, and if you find anything that is explicitly contradicted by Amazon's documentation - it means that I am wrong, please point that out and I'll update the text.
Seller feedback is very important
To see your seller feedback, log on to Amazon seller central.
The rules are simple
What you should know about feedback on Amazon
What you must do
If the customer is cooperative and they are willing to remove the feedback, they can do so:
When Amazon removes negative feedback for you
Amazon won't remove the negative feedback automagically, you have to get in touch with them and ask them to remove the comment, and point out the rationale for the request (one of the reasons above). Do so via the contact seller support section, then click Orders\Customer feedback problems.
Good luck selling!
If you're someone who checks the system logs every now and then, to make sure things are running smooth - you may have noticed some errors related to Private Disk:
The PRVDISKAMD64 service failed to start due to the following error: The system cannot find the file specified.
The program works fine, despite these log entries. The error is not critical and it has no impact on the program's functionality. But why is it there? And what does it mean?
Private Disk comes with several flavours of drivers - 32-bit and 64-bit. Upon installation, both driver types are registered, but only one of them is successfully loaded by the system.
The other type, which is not compatible with the platform, fails to load - hence the log entry is generated.
In other words, you can simply ignore these notifications.
This behaviour will be changed in the next release, so the system won't bother loading modules that are not designed for it. Until then, here is a simple solution:
On choosing the entries:
What the modules mean:
The best way to gather detailed troubleshooting information about Windows is the built-in System information tool. It generates a report that contains details about the hardware and software configuration. Here's how it works:
Here's what the report will contain:
2g 3g 64-bit authentication beta biometry «blue screen» brute-force bsod business driver email encryption «file system» flash form-filling gsm howto internet keeper keylogger logon microsim mobile password «password carrier» portability privacy «private disk» recovery release security seven sim «sim card» «sim manager» «sim reader» «smart card» sms software tips token troubleshooting usb usim vista voyager windows wiping xp