Samsung Galaxy S25 Ultra Basic Manual

Getting Started

For detailed descriptions on various functions, scan the QR code or use the "オンラインマニュアル (Online Manual)" (Japanese) on the product. Access it by navigating from the home screen: flick up → [Samsung] → [取扱説明書 (Online Manual)].

List of Packaged Items

• Main unit
• S Pen
• SIM card removal tool (sample)
• USB cable (CtoC) (sample)
• 取扱説明書 (Basic Manual) (Japanese)
• データ移行ガイド (Data Transfer Guide) (Japanese)

Note: Please use specified charging equipment (sold separately). The battery is built into the product. Illustrations are for explanation only and may differ from actual products.

Attaching the SIM card

Refer to the diagram for SIM card insertion. Use the SIM card removal tool (sample) to eject the tray.

Turning the Power On

1. Press and hold the (Side button) for over 2 seconds.
2. Swipe the screen up and down, left and right to unlock.

Note: If the power cannot be turned off or the screen freezes, press and hold the (Side button) and the lower side of the Volume button simultaneously for over 7 seconds.

Names of Parts

Refer to the diagrams for the location of:

• Mouthpiece/Microphone (upper/lower)
• Vent hole
• Pen button
• S Pen
• Front camera
• Proximity/Light sensor
• Display (touch panel)
• Receiver/Speaker
• Volume button
• (Side button)
• Fingerprint recognition sensor
• Speaker (rear)
• USB Type-C™ connection terminal
• SIM card tray
• Tray eject hole
• Microphone (rear)
• Rear camera
• Wireless charging position
• Range AF sensor
• Flash/Light
• NFC/FeliCa® location

Important Notes: Do not block vents or sensors. Ensure compatibility with fingerprint recognition sensors when using protective films.

Notes on Usage

Read the "Safety Precautions" before using the product. Refer to "故障とお考えになる前に(Troubleshooting)" for troubleshooting.

General Usage Precautions

• Communication may be affected in areas with poor signal reception.
• Communication intercepts by third parties cannot be eliminated, though 5G/LTE/WiMAX 2+/GSM/UMTS systems offer secure communication.
• Only VoLTE (LTE network) is available for Japanese emergency services.
• The product supports au World Service, but network services vary by area and content.
• The product is subject to inspection under the Radio Law.
• IMEI information is sent to the carrier for maintenance and monitoring.
• Check overseas regulations before using the product abroad.
• The Company is not liable for damages caused by natural disasters, third-party actions, customer misuse, or unusual conditions.
• The Company is not liable for incidental damages such as loss of business income or disruption of business.
• The Company is not liable for damages resulting from failure to observe manual instructions.
• Positioning data from sensors and GPS is for reference only.
• The Company is not liable for damages caused by combination with non-Company devices or software.
• Data loss due to malfunction, repair, or mishandling is not the Company's liability. Back up important data.
• Content data (paid or free) cannot be transferred during replacement due to malfunction or repair.
• Organic EL display characteristics may include afterimages or brightness/color changes. These are not malfunctions. Set display lighting to a short time to prevent afterimages and save power.
• Organic EL displays may have some dots that do not light up or are always lit, or exhibit color unevenness. These are structural characteristics, not malfunctions.
• Avoid exposing the Organic EL display to direct sunlight to prevent faults.
• Back up photo/video and music data to a computer or cloud service. Copyright-protected data may not be copyable.
• Do not discard the product with regular trash. Cooperate in collection and recycling efforts.

Note: "The Company" refers to the contracted telecommunications operator and Samsung Electronics Japan Co., Ltd., and Samsung Electronics Co., Ltd.

Precautions for Waterproofness/Dustproofness

The product is waterproof and dustproof when the SIM card tray and S Pen are fully installed and closed.

• Never open or close the SIM card tray when your hand or the product is wet.
• Do not immerse the product in liquids other than tap water (seawater, pool water, hot spring water, soap water, detergent water, bath salts, alcohol, beverages, seasonings, pet urine). If liquids get on the product, wash with clean water, wipe with a soft cloth, and allow to dry completely.
• Do not place the product on beach sand. Sand or particles may enter the speaker, causing volume drops or overheating/faults.
• Do not use the product underwater or strike it against the water surface. Touch operations may not work, or malfunctions may occur.
• Do not use or store the product in bathrooms, kitchens, or other highly humid areas for extended periods.
• Water may remain on the product after draining. Keep away from objects you don't want to get wet.
• If water accumulates in speakers, drain the water.
• Do not apply high water pressure directly or submerge for long periods.
• Do not wash the product using a washing machine or ultrasound cleaner.
• Do not immerse the product in a bathtub; it is not heat resistant.
• Abrupt temperature changes may cause condensation. Wait for the product to reach normal temperature in warm environments.
• The product does not float in water.
• Do not charge the product in the bathroom.
• If the product gets wet, drain water and wipe with a soft, dry, clean cloth.
• Waterproof/dustproof performance may deteriorate over time due to natural wear and tear or operating environment.

Note: The Company does not guarantee operations under all conditions. Malfunctions due to customer misuse are not covered by warranty.

Handling Precautions

Read these precautions to prevent malfunctions and ensure full performance.

• Use the product within an ambient temperature range of 5℃ to 35℃ and humidity range of 35% to 85%. Provisional use is possible between 36℃ to 40℃. This applies to the main unit, S Pen, and SIM card.
• Charging equipment and accessory devices should be used within an ambient temperature range of 5℃ to 35℃ and humidity range of 35% to 85%.
• Clean charging terminals and external connection terminals with a dry cotton swab. Do not apply strong force.
• Do not use the S Pen with other devices; it may cause malfunctions or damage.
• Use the S Pen without excessive force. Avoid placing it in luggage or sitting on it, as it may break or malfunction.
• When not in use, attach the S Pen to the product.
• When shooting important occasions, take a trial shot and check the image.
• Do not use the camera in prohibited areas.
• Respect copyrights and portrait rights when copying, distributing, publishing, modifying, or editing data. Obtain consent for using individuals' portraits or names. Shooting and recording may be restricted at some events even for private use. Be mindful of copyright and portrait rights when publishing photos online.

Notes on Bluetooth® / Wireless LAN (Wi-Fi®) Functions

• Connections with all Bluetooth® and wireless LAN (Wi-Fi®) devices are not confirmed and not guaranteed.
• While the product supports security features, security may be insufficient depending on the usage environment. Exercise caution during data communication.
• Wireless LAN uses radio waves, offering connectivity anywhere within range. However, unauthorized access by third parties is possible if security settings are not configured. Configure security settings at your own responsibility.
• The Company is not responsible for data or information leakage during Bluetooth®/wireless LAN (Wi-Fi®) communication.
• Using Bluetooth® and wireless LAN (Wi-Fi®) simultaneously may cause radio wave interference, decreasing speed or causing disconnections. If connection fails, stop using one of the functions.

Notes on Data Communication Charge

• Automatic data communication by some applications may result in high charges. Subscription to a data communication discount service or flat-rate plan is recommended.
• Data communication charges apply for browsing websites, downloading applications, using applications, sending/receiving emails, and performing product settings via the Internet.

Notes on Call Charge

• Ensure calls are disconnected by performing the call ending operation. Forgetting to end calls may result in high charges.

Take Your Manners with You

• Do not listen to music or watch videos while driving or riding. This is prohibited by law. Pay attention to traffic around you even when walking. Using a phone can impair hearing of surrounding sounds, leading to accidents. Be especially careful at railroad crossings, station platforms, and pedestrian crossings.
• Follow airline instructions regarding device usage on aircraft.

Appendix

After-Sales Service

When asking for repair

• Contact the Repair and Delivery Support Center.
• During warranty period: Repairs are determined as free or paid based on warranty terms.
• Outside warranty period: Repairs are charged if the product can be rendered usable.
• The warranty is valid for one year from the purchase date.
• Back up storage contents before repair, as they may disappear. The Company is not liable for damages or loss of income due to content alteration or loss.
• Recycled parts meeting quality standards may be used for repair. Replaced mechanical parts are collected and recycled and cannot be returned.
• Products processed, remodeled, analyzed (including software modification, reverse engineering, decompiling), or repaired by unauthorized facilities are not covered by warranty and repair may be refused.
• The product battery is a consumable item and not covered by warranty. Accessories (except S Pen) and samples are not covered by free-of-charge repairs warranty.

Performance parts for repair

The Company retains performance parts for repair of the main unit and S Pen for four years after discontinuation of production.

Free-of-charge repair warranty

1. Have the serial number (IMEI number) ready when contacting the repair help desk.
2. If the product malfunctions during the warranty period under normal use following manual precautions, the Company will repair it for free.
3. Repairs will not be free of charge (or may not be possible) in the following cases, even during the warranty period:
   • Failure to follow the instruction manual.
   • Unauthorized repairs or modifications.
   • Repairs at a non-authorized facility.
   • Damage due to accident or customer negligence (dropped, wet, etc.).
   • Damage due to natural disasters (earthquakes, floods, fire, salt damage, abnormal voltage).
4. Repair may not be possible depending on the extent of damage.
5. The Company assumes no responsibility for damages or lost profits incurred due to product failure.
6. The Company assumes no responsibility for accidents occurring when connecting non-specified devices.
7. On-site repairs are not offered.
8. This warranty is valid only in Japan.

This warranty guarantees free repair based on the period and conditions listed. It does not restrict customers' legal rights.

Repair and Delivery Support Wide with Cloud

A monthly membership after-sales service program for reliable use of au/UQ mobile devices, covering breakdown, theft, and loss. Refer to the au/UQ mobile website for details.

• For customers with au contracts: https://www.au.com/mobile/service/kosho-funshitsu-wide-cloud/ (Japanese)
• For customers with UQ mobile contracts: https://www.uqwimax.jp/mobile/plan/option/repair-wide-cloud/ (Japanese)

SIM card

The SIM card is lent by the contracted carrier. You are responsible for replacement costs in case of loss or damage. Contact "Inquiries" for suspected malfunctions, theft, or loss.

FCC RF Exposure Information

The product has been certified by the FCC. Refer to the "取扱説明書 詳細版 (Full Instruction Manual)" (Japanese) for details.

Export Administration Regulations

The product and accessories may be subject to Japan and U.S. Export Administration Regulations. Take required measures at your responsibility and expense for export/re-export. Contact relevant ministries for procedures.

Intellectual Property Rights

Trademarks

Company and product names are trademarks or registered trademarks of their respective holders.

• Bluetooth® word mark and logos are registered trademarks of Bluetooth SIG, Inc.
• Wi-Fi®, Wi-Fi CERTIFIED®, and the Wi-Fi logo are registered trademarks of the Wi-Fi Alliance.
• FeliCa is a contactless IC card technology developed by Sony Corporation. FeliCa is a registered trademark of Sony Corporation. is a registered trademark of FeliCa Networks, Inc.
• iWnn of OMRON SOFTWARE Co., Ltd. is used for conversion methods. © OMRON SOFTWARE Co., Ltd. 2008-2025 All Rights Reserved.
• QR code is a registered trademark of DENSO WAVE Incorporated.
• USB Type-C™ is a trademark of the USB Implementers Forum.

Customer Support Information

For customers with au contracts

• My au app: Check bills, data usage, contract info, points. Download: http://kddi-l.jp/mFH (Japanese)
• au Support (web): Support information for issues. URL: http://kddi-l.jp/Jy0 (Japanese)

For customers with UQ mobile contracts

• My UQ mobile (app): Check bills, data usage, contract info, points. Download: http://kddi-l.jp/FJ7 (Japanese)
• UQ mobile Support (web): Support information for issues. URL: http://kddi-l.jp/DHC (Japanese)

When getting a malfunction...

• Repair and Delivery Support: Available 7 days a week.
• Troubleshooting reception: Business hours 9:00-20:00. Call 0120-925-919.
• Message/Chat: Easy consultation via chat anytime, anywhere. AI responds 24 hours, communicators provide detailed responses. URL: http://kddi-l.jp/QJo (Japanese) for Message, http://kddi-l.jp/NZJ (Japanese) for Chat.

Environmental Reminder:やめましょう、歩きスマホ。キケン! 水ぬれ充電 あぶない! 電池への衝撃. Cooperate with the Mobile Recycle Network for recycling unused telephones, batteries, and chargers to protect the environment and reuse resources.