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A SIM card (full form Subscriber Identity Module or Subscriber Identification Module) is an integrated circuit (IC) intended to securely store the international mobile subscriber identity (IMSI) number and its related key, which are used to identify and authenticate subscribers on mobile telephony devices (such as mobile phones and computers). 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 practise the term "SIM card" refers to the entire unit and not simply the IC.
A SIM contains a unique serial number (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 two passwords: a personal identification number (PIN) for ordinary use, and a personal unblocking key (PUK) for PIN unlocking. 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.
SIMs are always used on GSM phones; for CDMA phones, they are needed only for LTE-capable handsets. SIM cards can also be used in satellite phones, smart watches, computers, or cameras.The first SIM cards were the size of credit and bank cards; sizes were reduced several times over the years, usually keeping electrical contacts the same, so that a larger card could be cut down to a smaller size.
SIMs are transferable between different mobile devices by removing the card itself. eSIM is replacing physical SIM cards in some domains, including cellular telephony. eSIM uses a software-based SIM embedded into an unremovable eUICC.

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  1. A

    Help Sim Card Registration

    Tanong ko lang po mga PHCM may link pa po ba pang register ng sim card sa TM kahit deadline na?? Salamat po....
  2. G

    Help GLOBE change of sim card with same number, issues, cust. service

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  3. T

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  4. P

    Update on SIM card Registration

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  5. P

    SIM CARD REGISTRATION

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  6. M

    Help Sim card registration

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  7. K

    Help Sim Card Registration sa Globe Closed na?

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  8. L

    Help Sim card first use date?

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  9. P

    Sim Card Registration Update

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  10. Q

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  11. K

    Help Sim card tracking

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  12. K

    Looking For Globe sim card used

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  15. I

    Help Stolen phone sim card

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  16. S

    Help Sim Card Registration

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  17. F

    Help Iphone 11 Sim Card Locked!

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  18. P

    Help Paano malalaman o macoconfirm if registered na ang smart, tnt, sun sim card mo?

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  19. I

    GLOBE Sim Card Expiry?

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  20. M

    Di makareceive ng sms at calls (smart lte sim card)

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  21. L

    Roaming sim

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  22. L

    S·T·S Blocked STS sim card

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  23. E

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  24. K

    Help Sim card registration

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  25. E

    Tutorial Register Smart Sim Card without valid ID

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  26. X

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  27. P

    Help How lock tnt sim card

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  28. G

    SIM CARD REGISTRATION

    Hi, It's the last day of Sim card registration. Are you all done registering your Sim cards? If not, you have still chance of doing it now. For SMART and TNT: Smart SIM Registration For GLOBE and TM: https://new.globe.com.ph/simreg For DITO subscribers, use the DITO app. Thank you.
  29. A

    SIM CARD EXTENSION +90DYS

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  30. V

    Help Sim Card Registration extension

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  31. S

    It's me and my unregistered sim card against the world

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  32. V

    Extended Sim Card Registration

    Justice Secretary Jesus Crispin Remulla announces the 90-day extension of SIM registration. | via Ian Cruz/GMA Integrated News Read more: SIM registration extended for 90 days, says Remulla
  33. E

    Help Barred Sim Card

    Good day po, ask lang po if okay pa kaya tong sim ko. Naka register ako sa Unli399 tapos gusto ko sana alamin kung kelan expiry ng promo ko kaya gumawa ako ng account sa smart website at dun nakita ko current load balance and promo expiry. Kaso nagtaka ako bakit BARRED nakalagay sa Status ng sim...
  34. J

    Help Where to buy GOMO sim card?

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  35. S

    Smart, Globe nananawagan ng extension sa SIM card registration | PASADA (19 April 2023)

  36. J

    Pano sim card error ? yes to 5858?

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  37. A

    Haggang kailan nalang yun sim register.

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  38. K

    Help GOMO SIM Card Registration

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  39. S

    Help Sim Card Registration for Business?

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  40. D

    Help About sim card registration and gcash

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  41. S

    Help Pwede po Ba Upgrade, Old SMARt Sim Card?

    Good day ka PHC! Mayroon akong old regular smart sim card non-lte, gusto ko sana upgrade to micro sim, available pa po kaya Smart upgrade sim? Thank you
  42. R

    SIM Card Registration Site

    For Globe: https://www.globe.com.ph/register-sim-card.html#gref For Smart: Smart SIM Registration For Sun: Sun - Sun ID Registration
  43. X

    Trivia SIM CARD RAGISTRATION

    Malapit na mag end ang sim registration sino pa hnd naka pag register
  44. C

    Help Free sim card for verification code

    Baka meron kayo alam na mag send code kahit wala sa cellphone yung sim card
  45. T

    Extend? SIM card registration deadline

    Baka sakali ma extend po ba ang april 26 2023 deadline natin sa simcard registration? or final na po yung april 26 po?
  46. 1

    Help Sim card PUK

    Pwedi paba mapalitan ang sim card pag na PUK na same number lang.? At saan ako pwedi mag punta para mapalitan.? matagal nadin ang sim nato 8years na, Tm po sim ko lahat ng account konektado dun beneficiary at bank account.😕 Need ko lang po sagot ninyo thanks..
  47. V

    Help Tp-link router with sim card slot

    Any suggestion po mga lods, meron bang tp-link na may sim slot
  48. L

    Sim card recommendation?

    Anung sim card ang magandang bilhin if heavy user ka sa data? Lalo na kasi lagi ako nabablock sa smart kahit na first consume ng Giga Stories na may unli tiktok gamit ko :( nakaka-ilang palit na ako ng sim card huhu
  49. A

    Help Recoverable ba ang mga deleted messages sa isang sim card?

    Mga idol, sana may makapansin ng post ko. Ask ko lang sana na once magdelete ka ng messages sa sim card mo, maari parin bang ma-recover iyon?
  50. I

    Help Hello may alam ba kayo paano malalaman name ng may ari ng sim card?

    baka may alam kayo mga paps, salamat
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