

how long before b12 injections take effect How Long Does It Take for Vitamin B12 to Work? Simple Guide
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4.2 ★★★★★
Based on 2407 reviews
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Product Reviews
★★★★★ 1
Sketchy
I bought this 2 pack and activated it for use in a remote device, not a cell phone.
Activating it on the phone with T-Moble is easy enough. You will need to tell them the devices IMEI number, the zip code where service will be used, and the SIM Card Number printed on the SIM card.
They charge a $5 activation fee along with the first month's payment for whatever data plan you choose. The minimum you could choose is a 2GB/month plan for $10/month with automatic activation.
(I wish I had read the details on the product more closely. I made the mistake of seeing some value in "pre-paid". There is NOTHING PRE-PAID about this card.
Plus the customer service seems a bit sketchy. On my first call I didn't have the IMEI device number. When I explained that I'd have to call back, the tech tried several different ways to press me for the SIM card number and other details to speed up the process when I called in again. That seemed odd since he wasn't able to create an account for me in the system without all of the information and the $5 activation fee. So, despite being a catch-22 he kept trying to get the SIM card number.
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Reviewed in the United States on July 26, 2024
★★★★★ 5
Flexible T-Mobile Connectivity - Twin Pack
Get two authentic, official T-Mobile SIM cards in one package, offering great value 📶✌️. Versatile 3-in-1 design fits Nano, Micro, and Standard SIM slots, ensuring compatibility with a wide array of devices 📱. Supports 2G, 3G, and 4G LTE networks for broad coverage. Suitable for both T-Mobile prepaid and postpaid plans, giving you flexibility. These unactivated starter kits are ready for talk, text, data, and hotspot setup 👍.
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Reviewed in the United States on May 29, 2025
★★★★★ 4
No se pudo activar, pero fue culpa de servicio al cliente.
Compré la tarjeta porque muchas compañías no querían activar mi celular chino, un Xiaomi Note 12 Pro+ 5g, y cuando lo puse dentro de mi celular pude llamar perfectamente al servicio de activación donde me pusieron mil excusas sobre que mi celular chino no funcionaba y no iba a funcionar y me desactivaron mi tarjeta SIM de Amazon, fui físicamente a una sucursal y me atendieron mucho mejor y me activaron una SIM literalmente igual a ésta, y ahora estoy con internet perfectamente funcional con un plan prepago como la de esta tarjeta. Bien producto, terrible servicio al cliente.
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Reviewed in the United States on August 1, 2025
★★★★★ 5
Great
Activated sim to iPhone SE without a problem.
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Reviewed in the United States on April 17, 2026
★★★★★ 3
Not the best
One of the sim card wernt able to be activated
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Reviewed in the United States on June 22, 2024
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