LTC1555CGN GSM 蜂窝电话 SIM 接口的典型应用电路。 LTC1555 提供 3V GSM 蜂窝电话与 3V 或 5V 用户识别模块 (SIM) 接口所需的电源转换和电平转换。这些部件包含一个电荷泵DC/DC 转换器，可为 SIM 卡提供稳定的 5V 电压。输入电压范围为 2.7V 至 10V，允许直接连接到电池。

近期，科技圈内流传着一则关于iPhone 17 Air的新动向，引发了广泛关注。知名科技评论者李楠在社交媒体上透露，若苹果能在iPhone 17 Air上引入中国的eSIM空中发卡技术，这将是苹果近年来对行业产生的又一重大影响。李楠表示，这一变化似乎即将成为现实。 据可靠消息，由于iPhone 17 ...

Got your eye on the latest Samsung smartphones? I've rounded up all the best Samsung Galaxy S25 preorders together into a handy guide for our readers looking to save some cash on these excellent ...

快科技1月23日消息，今天李楠发文表示，如果iPhone 17 Air国行版搞定eSIM，那么我们真的应该感谢苹果，据说这事有戏，这是苹果为数不多改变手机行业的事情了。 此前分析师郭明錤透露，iPhone 17 Air最薄处仅5.5mm，跟iPad Pro厚度相当，是苹果史上最薄的iPhone。 由于机身过于轻薄，iPhone 17 Air无法容纳SIM卡槽，该机将支持eSIM，这是一种嵌入式SI ...

Pre-orders opened on Thursday. Pre-orders can be collected from Feb 5, while the phones will be available in Singapore stores from Feb 14. The new Galaxy S25 uses Gemini offered by Alphabet's Google ...

And it turns out the assumptions about this phone proved to be true — the Samsung Galaxy S25 offers a number of minor hardware changes but has a very strong focus on new Galaxy AI capabilities.

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That said, you won’t have two physical SIM card slots in the US, which we know some of you prefer. Instead, one phone line needs to be set up through a Nano SIM card, while the second one will ...

The Telecom Regulatory Authority of India (TRAI) has come up with new rules related to SIM card validity offering significant relief to mobile users who tend to forget to recharge their secondary SIMs ...

At Samsung Galaxy Unpacked 2025, we're expecting to see the next generation of Samsung phones. Although Samsung hasn't officially confirmed exactly what will be unveiled during the live event ...