SEIO Agent

After the service, please re-run the Application Install Mobile T-money to use, non-cached, including the information on the Smart Touch USIM.

SK플래닛 · com.skp.seio

3.0 out of 5 (1 rating) 50M+ downloads v3.8.9 36.6 KB Android 2.3+ PEGI 3 · Everyone

Download APK 36.6 KB All versions

Signature matches the Google Play version Details

At a glance

Latest version: v3.8.9 (29)
Updated: May 18, 2026 (5 months ago)
APK size: 36.6 KB
Requires: Android 2.3+ (API 9)
CPU support: Any (no native code)
Category: Tools (app)
Listed since: Apr 8, 2022 (at least)
Permissions: 2
Website: sktelecom.com
Developer contact: [email protected]

About this APK

SEIO Agent is an app by SK플래닛 in the Tools category, listed since at least April 2022. It has no native code, so it runs on any Android processor.

Since version 3.8.5, the APK grew from 30.5 KB to 36.6 KB. It asks for 2 permissions, none of them sensitive. It asks for the same permissions as version 3.8.8.

What's new in v3.8.9

※ SEIO Agent 3.8.9 업데이트(5/18) 01.보안 강화

Description

From the listing uploaded by “appupdater”.

SEIO Agent is an essential service app for using SKT USIM supplementary services (NFC, authentication, etc.). -If the app is deleted or the service is stopped, USIM supplementary services may not work properly. -Please note that the service does not run directly, not individual apps. -After installation, please relaunch the app using USIM information such as PASS, mobile T-money, Cashbee. Contact: [email protected]

Version history

3 versions are listed, going back to v3.8.5.

v3.8.9 LATEST May 18, 2026 36.6 KB TRUSTED v3.8.8 May 13, 2026 32.6 KB TRUSTED v3.8.5 May 17, 2026 30.5 KB TRUSTED

All 3 versions

Security & authenticity

Security rating: Trusted

Signing certificate

Signature matches the Google Play version Checked by the source store on May 18, 2026.
Certificate issued to “SK Telecom” This is the certificate of the Google Play version.
Same certificate as the 2 other versions checked

Store checks and file details

Developer signature not checked yet May 18, 2026
Validated against Google Play May 18, 2026
Signed byO=SK Telecom, L=Korea, C=82
Signing certificate (SHA-1)A2:3B:98:2F:02:A9:E5:AD:1B:01:B0:A2:F1:5E:37:6F:C7:C3:17:16
File MD58343b3b97633282f727ae11063590ea0
Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020

Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (2 other versions compared). AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (2)

SEIO Agent requests 2 permissions, none of them sensitive.

Nfc transaction event android.permission.NFC_TRANSACTION_EVENT
Smartcard service access (custom) com.sktelecom.smartcard.permission.SERVICE_ACCESS

Required hardware & features

Basic touch input android.hardware.faketouch

SEIO Agent APK: questions and answers

Can I install this APK over the version I already have?

Yes, if your installed copy is older. It is signed like the Google Play version, so Android installs it as an update and keeps your data.

Is the SEIO Agent APK safe?

No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. Its signature matches the Google Play version. It is signed with the same certificate as the 2 other versions checked. After downloading, check that the file's MD5 is 8343b3b97633282f727ae11063590ea0.