eSIM & SIM abroad: choosing and activating a connection
Operator-sourced guidance on documents, device compatibility, activation, local numbers and validity. Start with your destination.
Which eSIM should you choose for a move?
Data-only serves an internet-only connection. Local calls require a voice-enabled plan: eSIM alone does not include them. Thailand has tourist eSIMs from AIS and True; Vietnam has eSIMs from Vietnamobile, VinaPhone and MobiFone. Registration and conditions for each destination are below.
Two guides with original sources. Not an operator ranking or a guaranteed-price catalogue.
Local Vietnam eSIMs: passport checks, compatibility, conversion and calls, with practical answers sourced from Vietnamobile, Viettel, VNPT and MobiFone.
Operator eSIM offers
Operator-published prices on the check date. Final checkout totals are unconfirmed.
Thailand
New tourist eSIM
AIS Thailand Tourist eSIM 5 days
399 THB
Price excludes 7% VAT.
Package duration
5 days
Data
Unlimited 4G/5G; speed may be reduced
Calls
AIS-network calls; THB 100 calling credit
Conditions & sources
Registration for foreign visitors requires a passport, with up to three SIM/eSIM numbers per passport. Register no more than seven days before departure.
Online purchase requires login and payment, followed by requesting the QR email. A compatible phone without a carrier restriction is required.
Speed may be reduced for sustained heavy use, torrents, hotspot sharing, large transfers or excessive/commercial use. No numeric daily quota or reduced speed is published.
Continued use requires re-identification within 60 days to avoid suspension. This is separate from package duration; the exact package start trigger is unconfirmed.
Calling credit covers Thai-network and international calls; the promotion specifies international prefix 00300. Listed out-of-package rates include THB 3/SMS and THB 2/MB.
Unconfirmed: checkout total, exact package start trigger, included SMS, auto-renewal and number-retention period.
Registration for foreign visitors requires a passport, with up to three SIM/eSIM numbers per passport. Register no more than seven days before departure.
Online purchase requires login and payment, followed by requesting the QR email. A compatible phone without a carrier restriction is required.
Speed may be reduced for sustained heavy use, torrents, hotspot sharing, large transfers or excessive/commercial use. No numeric daily quota or reduced speed is published.
Continued use requires re-identification within 60 days to avoid suspension. This is separate from package duration; the exact package start trigger is unconfirmed.
Calling credit covers Thai-network and international calls; the promotion specifies international prefix 00300. Listed out-of-package rates include THB 3/SMS and THB 2/MB.
Unconfirmed: checkout total, exact package start trigger, included SMS, auto-renewal and number-retention period.
Registration for foreign visitors requires a passport, with up to three SIM/eSIM numbers per passport. Register no more than seven days before departure.
Online purchase requires login and payment, followed by requesting the QR email. A compatible phone without a carrier restriction is required.
Speed may be reduced for sustained heavy use, torrents, hotspot sharing, large transfers or excessive/commercial use. No numeric daily quota or reduced speed is published.
Continued use requires re-identification within 60 days to avoid suspension. This is separate from package duration; the exact package start trigger is unconfirmed.
Calling credit covers Thai-network and international calls; the promotion specifies international prefix 00300. Listed out-of-package rates include THB 3/SMS and THB 2/MB.
Unconfirmed: checkout total, exact package start trigger, included SMS, auto-renewal and number-retention period.
Registration for foreign visitors requires a passport, with up to three SIM/eSIM numbers per passport. Register no more than seven days before departure.
Online purchase requires login and payment, followed by requesting the QR email. A compatible phone without a carrier restriction is required.
Speed may be reduced for sustained heavy use, torrents, hotspot sharing, large transfers or excessive/commercial use. No numeric daily quota or reduced speed is published.
Continued use requires re-identification within 60 days to avoid suspension. This is separate from package duration; the exact package start trigger is unconfirmed.
Calling credit covers Thai-network and international calls; the promotion specifies international prefix 00300. Listed out-of-package rates include THB 3/SMS and THB 2/MB.
Unconfirmed: checkout total, exact package start trigger, included SMS, auto-renewal and number-retention period.
Paid extension of the introductory tourist eSIM. This is not a new-eSIM price.
Package duration
10 days
Data
50 GB total
Calls
70 domestic minutes
Conditions & sources
For international tourists entering Vietnam: one introductory eSIM per valid passport per 30 days. The operator checks subscription eligibility.
E-visa holders enroll through their visa-result email before arrival with passport and portrait images. Visa-exempt arrivals use airport QR materials and passport/video verification on site.
The introductory 10 GB/24-hour allowance is separate and activates by calling 900 after landing. It is not included in this paid quota; the paid package start trigger is unconfirmed.
Daily allocation, reduced speed, SMS, auto-renewal and number-retention period are unconfirmed. The total data allowance does not establish a daily quota.
Unconfirmed: checkout total, exact package start trigger, included SMS, auto-renewal and number-retention period.
Paid extension of the introductory tourist eSIM. This is not a new-eSIM price.
Package duration
30 days
Data
150 GB total
Calls
200 domestic minutes
Conditions & sources
For international tourists entering Vietnam: one introductory eSIM per valid passport per 30 days. The operator checks subscription eligibility.
E-visa holders enroll through their visa-result email before arrival with passport and portrait images. Visa-exempt arrivals use airport QR materials and passport/video verification on site.
The introductory 10 GB/24-hour allowance is separate and activates by calling 900 after landing. It is not included in this paid quota; the paid package start trigger is unconfirmed.
Daily allocation, reduced speed, SMS, auto-renewal and number-retention period are unconfirmed. The total data allowance does not establish a daily quota.
Unconfirmed: checkout total, exact package start trigger, included SMS, auto-renewal and number-retention period.