Apple BT-MD309 IPAD Smart Cover Poly Green (New) — main product image

Apple BT-MD309 IPAD Smart Cover Poly Green (New)

Apple

Apple BT-MD309 IPAD Smart Cover Poly Green (New)

Name: Apple BT-MD309 IPAD Smart Cover Poly Green (New)
Brand: Apple
SKU: BT-MD309

★★★★★4.2 (55 reviews)

The Apple Smart Cover's magnetic alignment and auto wake/sleep deliver precise screen protection and instant usability in a cover that adds almost no bulk.

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Overview

The Apple Smart Cover (BT-MD309, Poly Green) is a screen-protective cover engineered around three functional behaviors: auto wake/sleep via magnetic sensor activation, two-position stand geometry, and a low-profile magnetic attachment system. The aluminum hinge magnetically self-aligns to the iPad's left bezel without manual positioning — the magnets in the hinge find the correct attachment points automatically. Interior magnets hold the cover closed during carry. The wake/sleep function is hardware-triggered: opening the cover activates the display; closing it locks and sleeps the device. This happens at the magnetic sensor level, with no perceptible delay and no software dependency. The cover folds into two distinct stand positions — a low typing angle and a steeper media-viewing angle — both of which hold position on flat surfaces without bracing.

The poly (polyurethane) construction keeps weight and thickness to a minimum, which is consistent with the design philosophy: the Smart Cover is not a case, it's a screen protector and stand that preserves the iPad's original form factor as closely as possible. The aluminum back remains exposed by design, reflecting Apple's position that the iPad's back surface is part of the product's aesthetic identity. For users who want full coverage, a back shell is a necessary addition. The Poly Green colorway is a solid, saturated green that photographs accurately. This cover is generation-specific — the magnet placement and hinge geometry are matched to a particular iPad model's dimensions, so compatibility verification before purchase is essential. For users who want functional screen protection and a reliable stand without bulk, the Smart Cover executes its intended scope cleanly.

Key Features

Thin, minimal design - The slim, yet sturdy Smart Cover protects your iPad screen without covering up its durable aluminum back. So your iPad still looks and feels like an iPad - just with a little extra protection.

Magnetic connection - An aluminum hinge magnetically aligns the Smart Cover with iPad for a perfect fit. While magnets inside help it stay put.

Wake on open / Sleep on close - Open the Smart Cover, and iPad magically wakes up. Close it, and iPad automatically goes to sleep.

Keyboard stand - The Smart Cover does double duty as a keyboard stand. Fold it back to tilt iPad into a comfortable writing position.

FaceTime and movie stand - The Smart Cover folds in just the right places to become the perfect FaceTime and movie-watching stand.

Specifications

Brand

Apple

Model

BT-MD309

Color

Poly Green

Material

Polyurethane (Poly)

Hinge

Aluminum with Magnetic Alignment

Closure

Magnetic

Wake/Sleep

Automatic (Magnetic Sensor)

Stand Positions

2 (Typing Angle, Viewing Angle)

Coverage

Screen Only

Condition

New

Pros & Cons

👍 Pros

Magnetic alignment mechanism provides precise, repeatable attachment without manual threading or snapping
Auto wake on open and sleep on close functions at the hardware level — no setup required, activates on every use
Dual-position stand functionality (typing angle and viewing angle) is stable on flat surfaces without additional props
Slim profile adds minimal thickness and weight over the naked iPad
Zipper garage — no exposed hardware; the cover's clean exterior profile doesn't introduce sharp edges or clasps

👎 Cons

Screen-only protection leaves the iPad's aluminum back fully exposed to scratches and surface damage
Magnetic closure holds under normal carry conditions but will detach under lateral stress or impact — not a ruggedized solution
Poly material (polyurethane) is less durable and more prone to edge wear over time compared to leather Smart Cover variants
Stand stability depends on a flat surface — the folded triangle stand is not functional on uneven or soft surfaces like fabric
Generation-specific fit means this cover will not transfer to a newer iPad model if you upgrade your device

Frequently Asked Questions

How secure is the magnetic connection on the Smart Cover?

The aluminum hinge uses embedded magnets to align and attach to the iPad's left edge, and interior magnets hold the cover closed. It holds reliably during normal carry and use, but it is not a locking mechanical closure — a significant lateral force or drop can detach it. It's designed for daily use, not ruggedized protection.

Does the Smart Cover protect the back of the iPad?

No. The Smart Cover protects the screen only. The aluminum back of the iPad is left fully exposed. If back protection is required, a separate back shell or case is needed; Apple designed the cover to complement iPad's aluminum back aesthetically, not to protect it.

Does the wake/sleep function work reliably in practice?

Yes — the magnetic wake/sleep trigger is a hardware-level function tied to magnets in the cover interacting with a sensor in the iPad. It activates every time without requiring software configuration and adds no measurable latency to the wake cycle.

Can the Smart Cover function as a stand?

Yes, in two configurations. Folded into a triangle, it props the iPad at a shallow typing angle — a stable position for keyboard use. Folded differently, it creates a steeper viewing angle suited for video playback or FaceTime. Both positions hold without additional support on flat surfaces.

Is this cover compatible with all iPad models?

No. This is designed for a specific iPad generation — compatibility depends on the iPad's form factor and magnet placement. Verify that the BT-MD309 listing specifies your iPad model before purchasing; Smart Covers are not universally interchangeable across iPad generations.