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Kalsten | Signal amplifier | Signal amplifier for mobile phones

Regular price $21.99 $44.00 SAVE $22.01 (50% OFF) Sale price
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Improve your reception and reduce call dropouts with a simple sticker that works like a 1.5 m antenna.

A family trip is coming up, but the signal is weak. Don't worry! If you are traveling to remote areas, you can take this signal booster with you. If you are having trouble receiving a signal and do not want to miss important emails, calls, and texts, this signal booster is just right for you. This way, you don't have to worry about anything else, which is especially helpful when you have a lot on your plate and want to keep track of all the calls.

Cell Phone Signal Booster

You will never lose the signal again. If the place you visit has a weak signal, just place this signal booster near the battery to improve the reception of some signals. Incredible, right? But it's true, and this signal booster proves to be extremely effective.

Cell Phone Signal Booster

Features:

πŸ“± Strong reception - It feels like having a 1.5 m antenna on your smartphone. Improves reception and reduces interference in boats, elevators, cars, buildings, tunnels, and mountains.

πŸ“± Universal sticker - Works with all analog, digital, and triband phones.

πŸ“± End dropped calls – Now you can answer important calls and emails without issues while ensuring your safety by checking your location and receiving current updates.

Technical specifications:

  • Type: Signal amplification
  • Color: Gold
  • Weight: 18g
  • Size: 3.5 Γ— 2.0 cm

Delivery includes:

  • 1/2/4/6 x Signal booster

Free standard shipping on all orders. No minimum purchase.

  • Ships to: United States
  • Processing: 1–4 business days (Mon–Fri)
  • Transit: 5–10 business days
  • Total delivery time: 6–14 business days
  • Order cut-off: 5:00 PM PST

You will receive a tracking number by email once your order ships. Please allow up to 48 hours for tracking to update.

See our full Shipping Policy.

You have 14 days from delivery to request a return.

  • Email support@open.shop with your order number to start a return.
  • Items must be unused, complete, and in their original packaging.
  • Return label: flat $9.99 USD, deducted from your refund β€” nothing to pay upfront.
  • Damaged, defective or incorrect items: we cover all return and replacement costs.
  • No restocking fees.
  • Exchanges: contact us and mention "exchange" β€” the new item ships once your return arrives.
  • Refunds are issued within 7 business days of inspection.

See our full Return Policy.

Questions about your order or our products? We're happy to help.

Open
Hooizolder 214
Drachten Friesland 9205CD
Netherlands

Email: support@open.shop

Customer Service:
Monday to Friday, 8:00 AM – 6:00 PM PST (excluding public holidays)

We reply to all messages within 24 hours on business days. Weekend messages are answered on Monday.

For quick answers, visit our FAQ page or use our Contact Form.