You'll use these labels when you choose which phone number to use for making or receiving calls and messages, to designate a number for cellular data, and to assign a number to your contacts so you know which number you will use.
If you change your mind later, you can change your labels by going to Settings, tapping either Cellular or Mobile Data, and then tapping the number whose label you want to change. Then tap Cellular Plan Label and select a new label or enter a custom label.
Choose a number to use when you call or send a message to someone who isn't in your Contacts app. Choose which cellular plans you want to use for iMessage and FaceTime. You can choose either or both numbers.
On this screen, choose a number to be your default, or you can choose which number is to be used only for cellular data. Your other number will be your default. If you want your iPhone to use cellular data from both plans, depending on coverage and availability, turn on Allow Cellular Data Switching.
When you call one of your contacts, you don't need to choose which number to use every time. By default, your iPhone uses the same number that you used the last time you called that contact. If you haven't called that contact, your iPhone uses your default number. You can also specify which number to use for your calls with a contact. Follow these steps:
If you're on a call and your other line shows No Service, either your carrier doesn't support Wi-Fi calling or you don't have Wi-Fi calling turned on.3 It could also mean Allow Cellular Data Switching is not turned on. When you're on a call, an incoming call on your other phone number will go to voicemail if you set up voicemail with your carrier.4 However, you won't get a missed-call notification from your secondary number. Call Waiting works for incoming calls on the same phone number. To avoid missing an important call, you can turn on call forwarding and forward all calls from one number to the other. Check with your carrier for availability and to find out whether additional fees apply.
If you turn on Allow Cellular Data Switching, then while you're on a voice call on your voice-only number, that number automatically switches to use voice and data.6 This lets you use both voice and data while on the call.
You could be asked to provide it when registering your phone, changing phone number, accessing online services from your mobile network or for other verification reasons. It is also useful to know it in case your iPhone gets stolen.
If your device has more than 1 SIM and is capable of Dual SIM/Dual Standby (DSDS), you can have multiple numbers on 1 phone. With DSDS, each SIM can be activated on a separate mobile phone number. Options include:
2023 (Junior)
Jeff Sims played in five games with two starts at quarterback in his first season at Nebraska. He completed nearly 60 percent of his passes, going 28-of-47 through the air for 282 yards and one touchdown. On the ground, Sims rushed 42 times for 189 with one touchdown. He wore the No. 7 as one one of 10 Huskers to earn a single-digit number in a team vote selecting him as one of Nebraska's "toughest" players.
I want to add the functionality of login similar to UPI apps. The user will select the SIM card from his phone and I will send an SMS from that SIM and will verify his phone number using that SMS. But I have to compare the number in the back-end or in API. So, I want to acquire the phone numbers of both SIM cards or the phone number of the SIM card user selects (Get the phone number from SMS or while sending SMS).
I am putting a generic class that I made for SIM selections and SMS. I have tried getting the mobile number from SubscriptionInfo, but it gives the operator name and all details right except the mobile number which returns an empty string. I have found in different blogs or my R&D that it is up to the operator whether to put the number there or not. So, if I am getting the mobile number, it is not 100% guaranteed that I will get the mobile number every time.
"He was the one who told me shortly after I was drafted that he was going to put me in Billy's number," Sanders said. "It was a big honor for me. I wore 21 in college. I assumed that's what I would get here.
A SIM card (full form: Subscriber Identity Module or Subscriber Identification Module) is an integrated circuit (IC) intended to securely store an international mobile subscriber identity (IMSI) number and its related key, which are used to identify and authenticate subscribers on mobile telephone devices (such as mobile phones and laptops). Technically the actual physical card is known as a universal integrated circuit card (UICC); this smart card is usually made of PVC with embedded contacts and semiconductors, with the SIM as its primary component. In practice the term "SIM card" refers to the entire unit and not simply the IC.
A SIM contains a unique serial number, integrated circuit card identification (ICCID), international mobile subscriber identity (IMSI) number, security authentication and ciphering information, temporary information related to the local network, a list of the services the user has access to, and four passwords: a personal identification number (PIN) for ordinary use, and a personal unblocking key (PUK) for PIN unlocking as well as a second pair (called PIN2 and PUK2 respectively) which are used for managing fixed dialing number and some other functionality.[1][2] In Europe, the serial SIM number (SSN) is also sometimes accompanied by an international article number (IAN) or a European article number (EAN) required when registering online for the subscription of a prepaid card. It is also possible to store contact information on many SIM cards.
The SIM was initially specified by the ETSI in the specification with the number TS 11.11. This specification describes the physical and logical behaviour of the SIM. With the development of UMTS, the specification work was partially transferred to 3GPP. 3GPP is now responsible for the further development of applications like SIM (TS 51.011[7]) and USIM (TS 31.102[8]) and ETSI for the further development of the physical card UICC.
Modern SIM cards allow applications to load when the SIM is in use by the subscriber. These applications communicate with the handset or a server using SIM Application Toolkit, which was initially specified by 3GPP in TS 11.14. (There is an identical ETSI specification with different numbering.) ETSI and 3GPP maintain the SIM specifications. The main specifications are: ETSI TS 102 223 (the toolkit for smart cards), ETSI TS 102 241 (API), ETSI TS 102 588 (application invocation), and ETSI TS 131 111 (toolkit for more SIM-likes). SIM toolkit applications were initially written in native code using proprietary APIs. To provide interoperability of the applications, ETSI chose Java Card.[14] A multi-company collaboration called GlobalPlatform defines some extensions on the cards, with additional APIs and features like more cryptographic security and RFID contactless use added.[15]
SIM cards store network-specific information used to authenticate and identify subscribers on the network. The most important of these are the ICCID, IMSI, authentication key (Ki), local area identity (LAI) and operator-specific emergency number. The SIM also stores other carrier-specific data such as the SMSC (Short Message service center) number, service provider name (SPN), service dialing numbers (SDN), advice-of-charge parameters and value-added service (VAS) applications. (Refer to GSM 11.11.[16])
SIM cards can come in various data capacities, from 8 KB to at least 256 KB.[10] All can store a maximum of 250 contacts on the SIM, but while the 32 KB has room for 33 Mobile country code (MCCs) or network identifiers, the 64 KB version has room for 80 MNCs.[17] This is used by network operators to store data on preferred networks, mostly used when the SIM is not in its home network but is roaming. The network operator that issued the SIM card can use this to have a phone connect to a preferred network that is more economic for the provider instead of having to pay the network operator that the phone discovered first. This does not mean that a phone containing this SIM card can connect to a maximum of only 33 or 80 networks, instead it means that the SIM card issuer can specify only up to that number of preferred networks. If a SIM is outside these preferred networks, it uses the first or best available network.[12]
Each SIM is internationally identified by its integrated circuit card identifier (ICCID). Nowadays ICCID numbers are also used to identify eSIM profiles, not only physical SIM cards. ICCIDs are stored in the SIM cards and are also engraved or printed on the SIM card body during a process called personalisation.
The ICCID is defined by the ITU-T recommendation E.118 as the primary account number.[18] Its layout is based on ISO/IEC 7812. According to E.118, the number can be up to 19 digits long, including a single check digit calculated using the Luhn algorithm. However, the GSM Phase 1[19] defined the ICCID length as an opaque data field, 10 octets (20 digits) in length, whose structure is specific to a mobile network operator.
As required by E.118, the ITU-T updates a list of all current internationally assigned IIN codes in its Operational Bulletins which are published twice a month (the last as of January 2019 was No. 1163 from 1 January 2019).[21] ITU-T also publishes complete lists: as of August 2023, the list issued on 1 December 2018 was current, having all issuer identifier numbers before 1 December 2018.[22]
The SIM stores network state information, which is received from the location area identity (LAI). Operator networks are divided into location areas, each having a unique LAI number. When the device changes locations, it stores the new LAI to the SIM and sends it back to the operator network with its new location. If the device is power cycled, it takes data off the SIM, and searches for the prior LAI.
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