Samsung Galaxy A12 A21S A31 Coaxial Cable

Coaxial Cable for Samsung Galaxy A12, A21s and A31: Network Connectivity Restoration

The antenna coaxial cable is the component responsible for connecting the main board to the charging board and lower antenna, restoring stable mobile signal transmission in the mobile phone. This RF antenna line ensures the continuity of GSM frequencies and network data when the interior cable suffers damage during repairs or accidental impacts.

Technical Specifications

• Part type: RF antenna coaxial cable
• Compatibility: Samsung Galaxy A12 (SM-A125F, SM-A127F); Samsung Galaxy A21s (SM-A217F); Samsung Galaxy A31 (SM-A315F)
• Quality: Compatible

When to Replace

• Mobile network signal null or with constant coverage drops.
• Difficulty maintaining active calls or mobile data without connection — confirm diagnosis.
• Cable creased, cut or with damaged connector during device opening.

Notes for the Technician

• Test before applying: connect the part to the equipment and confirm its operation before fixing or gluing it definitively. Thus, if there is any issue, return or warranty is handled quickly and simply.
• Installation difficulty: Medium.
• Requires removal of the back cover and intermediate chassis to access connection ends.
• Fit micro-coaxial connectors with slight pressure and straight alignment to prevent terminal deformations.
• Guide the cable through the lateral slot of the chassis so as not to pinch it when tightening the frame screws.

What Distinguishes This Version

This compatible part has been rigorously selected to ensure precise conductivity and reliable bench assembly tolerances. It is the appropriate choice for the professional technician seeking efficient intervention with excellent profitability ratio.

Frequently Asked Questions

Is this coaxial cable the same for Galaxy A12, Galaxy A21s and Galaxy A31?
Yes, the cable shares the same length and micro-coaxial connector type in the three indicated devices.

Did the phone stop picking up network after screen replacement, can the fault be the coaxial cable?
Yes, if the cable was creased or poorly fitted to the secondary board during assembly, the signal stops passing properly.