Cell Phone No Credit Check No Credit Card
Cell Phone No Credit Check No Credit Card
A subscriber identity module ( SIM ) on a removable SIM card securely stores the service-subscriber key (IMSI) used to identify a subscriber on mobile telephony devices (such as mobile phones and computers). The SIM card allows users to change phones by simply removing the SIM card from one mobile phone and inserting it into another mobile phone or broadband telephony device.
A SIM card contains its unique serial number, internationally unique number of the mobile user (IMSI), security authentication and ciphering information, temporary information related to the local network, a list of the services the user has access to and two passwords (PIN for usual use and PUK for unlocking).
SIM cards are available in three standard sizes. The first is the size of a credit card (85.60 mm × 53.98 mm x 0.76 mm). The newer, most popular miniature version has the same thickness, but a length of 25 mm and a width of 15 mm, and has one of its corners truncated (chamfered) to prevent misinsertion. The newest incarnation known as the 3FF or Micro SIM has dimensions of 15 mm × 12 mm. Most cards of the two smaller sizes are supplied as a full-sized card with the smaller card held in place by a few plastic links; it can easily be broken off to be used in a device that uses the smaller SIM.
The first SIM card was made in 1991, with Munich smart card maker Giesecke & Devrient selling the first 300 SIM cards to Finnish wireless network operator Radiolinja.
Smart card technology
There are three standards for SIM cards: ISO/IEC 7816 Class A, B and C (5V, 3V and 1.8V). The operating voltage of the majority of SIM cards launched before 1998 was 5V. SIM cards produced subsequently are compatible with 3V and 5V or compatible with 1.8V and 3V.
Each SIM card stores a unique International Mobile Subscriber Identity (IMSI), of this number format:
- The first 3 digits represent the Mobile Country Code (MCC).
- The next 2 digits represent the Mobile Network Code (MNC).
- The next 10 digits represent the mobile station identification number.
Since a SIM card is a smart card, it also has an ICC-ID number based on International Standard ISO/IEC 7812. The maximum length of the visible card number is 20 characters; 19 digits are preferred, but telecommunication network operators who already issue Phase 1 SIM cards with an identification number length of 20 digits may retain this length. The number is composed of the following subparts:
Issuer identification number (max. 7 digits)
- Major industry identifier (MII), 2 digits, 89 for telecommunication purposes.
- Country code, 1-3 digits, as defined by ITU-T recommendation E.164.
- Issuer identifier, variable.
Individual account identification
- Individual account identification number.
- Parity check digit.
W-SIM is a SIM card that also integrates core cellular technology into the card itself.
A virtual SIM is a mobile phone number provided by a mobile network operator that does not require a SIM card to terminate phone calls on a user's mobile phone.
Card sizes
SIM cards were first made the same size as a credit card (85.60 mm × 53.98 mm × 0.76 mm). The development of physically smaller mobile devices prompted the development of a smaller SIM card, the Mini SIM card. Mini SIM cards have the same thickness as full-size cards, but their length and width are reduced to 25 mm × 15 mm.
The Mini SIM card has the same contact arrangement as the full-size SIM card and they are normally supplied within a full-size card carrier, attached by a number of linking pieces. This arrangement allows for such a card as supplied to be used in a device requiring a full-size card, or for a device requiring a Mini SIM card, suitable scorings manufactured along the outline of the Mini SIM card allow it to be cleanly broken out by hand.
Even smaller device sizes have prompted the development of a smaller still card size, the 3FF or Micro SIM. Micro SIM cards have the same thickness and contact arrangement again, but the length and width are further reduced to 15 mm × 12 mm. The specifications for the 3FF or Micro SIM also include additional functionality beyond changing the physical card size.
Usage in mobile phone standards
The use of SIM cards is mandatory in GSM devices. The equivalent of a SIM in UMTS is called the Universal Integrated Circuit Card (UICC), which runs a USIM application, while the Removable User Identity Module (R-UIM) is more popular in CDMA-based devices e.g. CDMA2000. The UICC card is still colloquially designated a SIM card. Many CDMA-based standards do not include any removable card, and the service is bound to a unique identifier contained in the handset itself.
The satellite phone networks Iridium, Thuraya and Inmarsat's BGAN also use SIM cards. Sometimes these SIM cards work in regular GSM phones and also allow GSM customers to roam in satellite networks by using their own SIM card in a satellite phone.
The SIM card introduced a new and significant business opportunity of mobile telecoms operator/carrier business of the mobile virtual network operator (MVNO) which does not own or operate a cellular telecoms network, but which leases capacity from one of the network operators, and only provides a SIM card to its customers. MVNOs first appeared in Denmark, Hong Kong, Finland and the UK and today exist in over 50 countries including most of Europe, USA, Canada, Australia and parts of Asia and account for approximately 10% of all mobile phone subscribers around the world.
On some networks, the mobile phone is locked to its Carrier SIM card e.g. on the GSM networks in the USA and the UK. This tends to happen only in countries where mobile phones are heavily subsidised, but even then not all countries and not all operators. In the US the phones are locked to the carrier, meaning that only specific carriers' SIM cards will work. In the UK, typically, most phones with subsidies are SIM-locked.
Phones sold with a contract are often locked (SIM-locked) to the network that provided the phone, since the phones are often subsidized in return for using provider for a minimum term (typically, 12 or 24 months). For example in the UK, a phone that would cost £250 without a contract might be offered free-of-charge with an 18 month contract commitment of £30 per month (£540 commitment in total).
A plethora of online and high-street (third-party) businesses now offer the ability to remove the SIM-lock from a phone, effectively making it possible to then use the phone on any network by inserting a different SIM card. This is a useful benefit for travellers that might want to put a local SIM card into their phone when they arrive in a country, in order to minimize roaming charges. In many countries, now it is possible to buy a pre-pay SIM card just by walking into a store, and these SIM-only deals are a cost effective way to stay in contact when travelling.
Phones sold as pre-pay often come with an operator subsidy, especially in competitive mobile markets like the UK. These phones are sold not just through mobile phone stores, but also supermarkets, catalogs, stationery outlets and online; thus the mobile companies are constantly racing to the lowest price. Prepay phones come with a bundled SIM, which can be activated by the user in case the phone is bought up. The handsets are often SIM-locked to ensure that the user does not use another operator, allowing the original operator to eventually recoup its subsidy. However, because the units can be unlocked for a small fee (and even the operators themselves offer this service), units can be bought cheaply, separated from the original SIM card and sold on for a profit, perhaps in other markets, perhaps as contract phone. This is known in the industry as box breaking , and often harms the profits of the operator while allowing complicit sales staff and box breakers to reap the rewards. Note that, if a prepaid handset breaks, the SIM card (representing the prepaid account value, plus user's address book, history, etc) can typically be moved to another prepaid handset if the phone-network is the same. That is, the account is tied to the portable SIM card, not the handset, on prepaid phones. This is useful because by 2010, prepaid handsets cost less than the value a user might have stored in an account.
Mostly, GSM and 3G mobile handsets can easily be SIM-unlocked and used on any suitable network with any SIM card. A notable exception is the Apple iPhone, where in most markets Apple has gone to extreme lengths to lock-down their phones; thus they can only be used with the partner's network. This has led to a popular hack called the jail-break , which allows custom software unapproved by Apple to run on the phone. Then software can be run to unlock the phone, which frees the iPhone from the
free cell phone even with bad credit or no credit check ...
Many free cell phones are available with no credit card or credit check and come with ... now - Click2Order here for your free cell phone with bad credit no credit check
Get A Free Cell Phone With No Credit Check - Free ...
NO CREDIT CHECK Get a free phone.Quality cellular service ... Get Your Free Phone Now.. No Credit Check! No Credit Card Required! ... Get A Free Cell Phone-No Credit Check. Esctelecom
Bad credit cell phones - loans - credit cards ...
NO CREDIT CHECK REQUIRED ! NO CREDIT CARD NEEDED ! EVERYONE IS APPROVED ! Anytime minutes ... below pictures of phones and choose your cell phone minute plan with NO CREDIT CHECK
Cheap Cell Phone Deals, Discount Cell Phones, Cell ...
... Renew Prepaid Cell Phone w/ FREE $25 Prepaid Refill Card for a low $29.99 Free Shipping. No ... Mythic a897 3G Cell Phone AT&T - FREE w/ Contract + $40 Credit ... in Green Box, check ...
No Credit Check Cell Phone - No Credit Check Cell ...
Free Cell Phone No Credit Check No Credit Card, Cheap Cell Phone Plans With No Credit Check, Free Cell Phone No Credit Check No Deposit
Cell Phone Plans, Credit Cards & CD Rates...Save Money ...
... tools to save your business money on credit cards, cell phone service and more. Check it out» ... Do you pay off your primary card each month? ... No
Get A Free Cell Phone With No Credit Check - Home
... phones,cellular ringtones,latest motorola phones.Nationwide coverage,no credit check ... Get a Free 1GB Memory Card with any cell phone purchase. Just enter coupon code WIREFLY1GBCARD ...
Global Talk Inc - Offers You: "No Deposit No Credit ...
You get a FREE cell phone with real service AND TREATED with dignity. NO CREDIT CHECK REQUIRED! NO CREDIT CARD NEEDED! ... on our No Credit Check Cell Phone ...
Bad credit cell phone - how far it will affect people ...
» No credit check phones » Bad credit mobile phones » Poor credit mobile phones » Contract phone no credit card ... For those people with bad credit cell phone ...
Check Cell Phone Plans & Prices From Sprint NexTel ...
No Credit Check Cell Phones : Compare Cell Phone Plans AT&T / Cingular Plans Tmobile Plans Verizon Plans NexTel Plans ALLTEL Plans Sprint Plans
