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A real phone number for LINE

Updated 2026-10-22 · By the Smart Messaging team (Smart Messaging Inc.)

Short answer: LINE verifies accounts with a code sent by text message or phone call, and asks for a number from a mobile provider. A Smart Messaging mobile number receives both like a SIM and works for sign-up with most apps. If LINE does not accept it, the 7-day replacement guarantee gives a free new number, up to 2 times.

LINE is the main messenger in Japan, Thailand and Taiwan, and widely used for business accounts and customer chats. Its phone rules are stricter than most, so the number type you pick matters.

Why people want a separate number for LINE

  • Keeping a LINE account for customers or a shop separate from personal chats
  • Staying in touch with friends and colleagues in Japan, Thailand or Taiwan after moving away
  • Setting up LINE before relocating, so you arrive already reachable
  • Protecting a personal number that you do not want to share with business contacts

LINE's phone number rules

LINE's help center says you can verify only one LINE account with one phone number. When you register, change your number or transfer your account to a new device, LINE sends a verification code by text message, and you can tap Call me instead to receive it by automated call.

LINE also says that landlines, 050 numbers and virtual phone numbers cannot be verified, and recommends a number offered by a mobile service provider. That is why we suggest a Smart Messaging mobile number for LINE rather than a local or toll-free one. Smart Messaging numbers are real numbers on national networks, but LINE makes its own decision on each number.

Which Smart Messaging number to choose for LINE

Number typeSuitability for LINEWhy
MobileRecommendedLINE asks for a number from a mobile service provider
Local (geographic)Not recommendedLINE says landline numbers cannot be verified
Toll-freeNot recommendedBetter suited to business calling than app verification

Registering LINE step by step

  1. Create a Smart Messaging account and buy a mobile number in the country you want.
  2. Open LINE on your main device and tap Sign up.
  3. Select the country and enter the Smart Messaging number.
  4. Read the code from the SMS inbox in your dashboard and enter it. If you choose Call me instead, answer the call in the web dialer, a SIP app or a forwarded phone.
  5. Register an email address and password in LINE so you can transfer the account later.

If the LINE code does not arrive

LINE's help center notes that codes expire quickly and that too many attempts can lock verification for a period, shown as a message asking you to wait a number of days. Enter each code as soon as it arrives, make sure the country you selected matches the number, and try the call option before requesting more texts.

If LINE will not verify the number, the 7-day replacement guarantee gives you a free new mobile number in the same country, up to 2 times. If the number has not been used for any call or SMS, you can ask for a refund within 7 days.

Keeping your LINE account safe

Keep the number renewed, because LINE asks for a code again whenever you change devices. Never share a verification code, even with a friend who asks, as LINE warns this is a common way accounts are stolen. Follow LINE's terms: one account per number, registered to you or your business.

What else the number does

The same number can take normal calls and texts. You get unlimited incoming SMS and calls, 500 outgoing SMS and 1,000 outgoing minutes a month, SIP credentials for apps like Zoiper or Linphone, and call forwarding to any phone, from $1.80 per month, billed yearly ($21.60 per year).

Top countries for LINE

Numbers in stock as of 2026-11-02. Every number costs $1.80/month, billed yearly.

CountryNumber types in stockPrice
Japan (+81)Mobile 14 · Local 13 · Toll-free 5$1.80/mo billed yearly
Thailand (+66)Mobile 13 · Local 19$1.80/mo billed yearly
Taiwan (+886)Mobile 13 · Local 26$1.80/mo billed yearly
Indonesia (+62)Mobile 18 · Local 21$1.80/mo billed yearly
United States (+1)Mobile 12 · Local 25 · Toll-free 3$1.80/mo billed yearly
United Kingdom (+44)Mobile 13 · Local 14 · Toll-free 6$1.80/mo billed yearly

Included on every plan

  • Unlimited incoming SMS
  • Unlimited incoming calls
  • 500 outgoing SMS per month
  • 1,000 outgoing minutes per month
  • SIP credentials, call forwarding and web dialer
  • Keep your number as long as you want
  • Works with WhatsApp, Facebook, Google, Telegram and thousands more
  • 7-day replacement guarantee — free new number if it doesn't work for you
  • 7-day money-back guarantee if the number is unused

Numbers from $1.80 per month, billed yearly ($21.60 per year). Pay with USDT or USDC.

LINE numbers — FAQ

Does LINE accept Smart Messaging numbers?

Choose a mobile number: it receives SMS and calls like a SIM and works for sign-up with most apps. If LINE declines it, you get a free new number within 7 days, up to 2 times.

Can I get the LINE code by phone call?

Yes. LINE offers Call me instead, and you can answer in the web dialer, a SIP app or on a forwarded phone.

Can I use one number for two LINE accounts?

No. LINE's help center says one phone number can verify only one LINE account.

Why not use a local number for LINE?

LINE says landlines cannot be verified, so a mobile number is the better choice.

Which country should I pick for LINE?

Any country where you want to be reachable. Japan, Thailand and Taiwan are common choices for people with contacts there.

What happens when I change phones?

LINE asks for a new verification code, so keep the number renewed and your email registered in LINE.

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