1. Introduction
The Sinjimoru Phone Grip with Silicone Band is a versatile accessory designed to enhance the usability of your smartphones, tablets, and eReaders. It functions as both a secure one-hand holder and a convenient kickstand, providing comfort and stability for various activities.
2. Product Features
- 2-in-1 Phone Grip & Kickstand: Combines a secure silicone-based adhesive with a built-in kickstand for hands-free use.
- Comfortable Grip with Adhesive Backing: Ensures a secure hold, minimizing slips during daily activities.
- Ergonomic One-Hand Holder: Ideal for multitasking and commuting, providing a comfortable grip for extended one-hand use.
- Universal Device Compatibility: Easily attaches to any case or device, compatible with iPhones, Android devices, tablets, and eReaders.
- Simple Installation & Removal: Features strong adhesive backing for easy attachment and reattachment without residue or loss of adhesion.
3. Package Contents
Upon opening your Sinjimoru Phone Grip package, you should find the following items:
- Sinjimoru Phone Grip with Silicone Band
- Assistant Adhesive Film (for glass-back devices)
- Instruction Manual (this document)
Video: Unboxing and initial overview of the Sinjimoru Sinji Grip.
4. Setup and Installation
Follow these steps to properly attach your Sinjimoru Phone Grip to your device:
- Clean the Surface: Ensure the back surface of your phone or case is clean, dry, and free of dust or oils.
- Apply Assistant Adhesive Film (for Glass-Back Phones):
If your phone has a glass back (e.g., iPhone X, iPhone 8, iPhone 7 matte black/jet black, or similar glass/special material backs), it is highly recommended to first apply the provided Assistant Adhesive Film. This film creates a suitable surface for the grip's adhesive to bond securely.

Image: Instructions for applying the Assistant Adhesive Film.
Carefully peel off the backing from the Assistant Adhesive Film and firmly press it onto the desired area on your phone's back. Smooth out any air bubbles.
- Prepare the Sinji Grip: Peel off the red 3M protective film from the adhesive backing of the Sinji Grip.
- Position the Grip: Carefully align the Sinji Grip on the back of your phone or on the applied Assistant Adhesive Film. Ensure it is centered and positioned comfortably for your hand.
- Apply Pressure: Once positioned, firmly press down on the Sinji Grip for at least 30 seconds to ensure strong adhesion. For optimal bond, allow 24 hours before heavy use.

Image: Step-by-step visual guide for installing the Sinjimoru Phone Grip.
Video: Demonstration of Sinji Grip installation and usage.
5. Operating Instructions
5.1. Using as a One-Hand Grip
To use the Sinjimoru Phone Grip as a secure one-hand holder, simply slide your fingers through the silicone band. This allows for a comfortable and stable grip, reducing the risk of accidental drops, especially when using larger devices or multitasking.

Image: Demonstrating the ergonomic one-hand grip.
5.2. Using as a Kickstand
The Sinjimoru Phone Grip can also function as a convenient kickstand for hands-free viewing. Gently pull the silicone band outwards until it forms a stable loop. You can then prop your device horizontally or vertically on a flat surface for watching videos, video calls, or browsing.

Image: Demonstrating the kickstand function for horizontal viewing.
6. Care and Maintenance
- Cleaning: The silicone pad is dust-resistant. To clean, gently wipe with a damp cloth.
- Avoid Overstretching: While flexible, excessive or prolonged stretching of the silicone band, especially when using the stand function with heavy devices, may cause it to stretch out over time.
- Adhesion: The 3M adhesive is strong. Ensure the mounting surface is flat and clean for optimal adhesion. Reattaching to other devices is possible, but repeated removal may reduce adhesion over time.
- Placement: Avoid attaching the product over the fingerprint scanner part of your device, as this may interfere with its functionality.
- Sharp Objects: Do not scratch the product with sharp objects, as this can damage the silicone and adhesive.
- Forceful Pulling: The product may be damaged if pulled on too strongly.

Image: Important notes on product usage and care.
7. Troubleshooting
- Grip not sticking: Ensure the surface is clean and flat. For glass-back phones, use the Assistant Adhesive Film. Allow 24 hours for the adhesive to fully cure after initial application.
- Stand function is weak or unstable: This may occur if the silicone band has been overstretched due to prolonged use or heavy device weight. Ensure the device is placed on a stable, flat surface.
- Interference with fingerprint scanner: If the grip is covering the fingerprint scanner, carefully re-position it to avoid obstruction.
- Damage to grip: Avoid using sharp objects near the grip or pulling it forcefully, as this can cause irreversible damage.
8. Specifications
| Attribute | Detail |
|---|---|
| Product Dimensions | 2.2 x 0.12 x 3.58 inches |
| Item Weight | 0.247 ounces |
| Material | Silicone |
| Grip Type | Strap Grip |
| Color | Black |
| Manufacturer | Sinjimoru Co., Ltd |
| Model Number | SGR_MOUT_SLCN_BK |


Image: Various views of the Sinjimoru Phone Grip.
9. Warranty and Support
For warranty information, technical support, or any inquiries regarding your Sinjimoru Phone Grip, please contact Sinjimoru customer service through their official website or the retailer where the product was purchased. Please retain your proof of purchase for warranty claims.
You can visit the Sinjimoru Store on Amazon for more information and contact options.