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Phone adapters

SVBONY Universal phone adapter (SW2546A)

SVBONY's universal phone adapter: an aluminum-shell mount for eyepieces of 25 to 48 mm with a phone clamp from 52 to 100 mm that locks with a steel bolt instead of a spring, on EVA pads.

SVBONY universal phone adapter in aluminum with a black clamp and EVA pads

SVBONY Universal phone adapter (SW2546A)

SVBONY's universal phone adapter: an aluminum-shell mount for eyepieces of 25 to 48 mm with a phone clamp from 52 to 100 mm that locks with a steel bolt instead of a spring, on EVA pads.

Eyepiece diameter range
25 to 48 mm (0.98 to 1.89 in) outer diameter · not 2 in eyepieces
Phone width range
52 to 100 mm (2.05 to 3.94 in)
Three-axis adjustment
Not described · up-down positioning for photos and sideways for video, stated
Camera offset travel
Not published by the maker.
Clamp rigidity
High-strength PA plastic clamp with an adjustable steel-bolt lock, not a spring · EVA pads
Case clearance
Not published by the maker.
Amazon reference
B01K7M0JEM
EAN
0608560886869
  • Wide phone range: 52 to 100 mm
  • Steel-bolt lock holds firmly
  • Phone compatibility list is years out of date

Best for: A large current phone on a 1.25 in eyepiece, where the clamp has to hold rather than spring

≈ $11
Check price on Amazon

Specifications

Eyepiece diameter range
25 to 48 mm (0.98 to 1.89 in) outer diameter · not 2 in eyepieces
Phone width range
52 to 100 mm (2.05 to 3.94 in)
Three-axis adjustment
Not described · up-down positioning for photos and sideways for video, stated
Camera offset travel
Not published by the maker.
Clamp rigidity
High-strength PA plastic clamp with an adjustable steel-bolt lock, not a spring · EVA pads
Case clearance
Not published by the maker.
Amazon reference
B01K7M0JEM
EAN
0608560886869

Two ranges

The adapter grips eyepieces of 25 to 48 mm outer diameter and phones from 52 to 100 mm wide. That covers most 1.25-inch eyepieces and today’s large phones. It does not fit 2-inch eyepieces.

A bolt, not a spring

The phone clamp is high-strength PA plastic and locks with an adjustable steel bolt instead of a spring, on high-density EVA pads. A heavy phone stays put; the shell is aluminum alloy.

Many instruments

Telescopes, binoculars, monoculars, spotting scopes, microscopes and night-vision monoculars, SVBONY says.

Tested phones

The compatibility list names older models such as the iPhone 7 and Galaxy S7. Measure the phone, with its case, against the 52 to 100 mm range.

Price and availability

On November 7, 2026, Amazon.com listed it at about $11 from a third-party seller.

Figures as Keepa reported them on the day this page was last updated. Stock and pricing shift without warning.

Prices quoted in this text were read on November 7, 2026. The live price is at the top of the page.

What gets asked before buying

Will my phone fit?

If it is 52 to 100 mm wide, including any case. SVBONY's tested list names older models; measure your phone.

Which eyepieces does it fit?

Outer diameters of 25 to 48 mm, which covers most 1.25 in eyepieces and many binocular and spotting-scope eyecups. Not 2-inch eyepieces.

Why a steel bolt instead of a spring?

A spring clamp can let a heavy phone slip or sag; a bolt locks it in place.

What barrel it suits

The rest of this rack

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    Brightness adjustment
    Adjustable, stated
    Bracket fitting
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    Battery type
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    Life
    Not published by the maker.
    Window size
    Not published by the maker.
    Alignment adjustment
    Thumbwheels for horizontal and vertical positioning
    Amazon reference
    B07CGH99X5
    EAN
    6971336223255
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    Reticle type
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    Brightness adjustment
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    Battery type
    CR2032 3 V, included
    Life
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    Window size
    Not published by the maker.
    Alignment adjustment
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    Amazon reference
    B00009X3UU
    EAN
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    Brightness adjustment
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    Not published by the maker.
    Life
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    Window size
    Not published by the maker.
    Alignment adjustment
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    Amazon reference
    B072VGFTN5
    EAN
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