[
    {
        "role": "user",
        "content": "I%20bought%20a%20ZTE%20U59%20I%20know%20it%20takes%20a%20mini%20sim%20but%20does%20it%20take%20an%20Esim%20and%20can%20it%20be%20used%20without%20the%20battery%20but%20plugged%20in%3F"
    },
    {
        "role": "assistant",
        "content": "I couldn\u2019t find any credible sources confirming that the **ZTE U59** supports eSIM, and I also didn\u2019t see anything indicating it can be operated safely without its battery. Here's a breakdown of what the available evidence suggests, and what things to consider.\n\n---\n\n## \ud83d\udeab eSIM Support\n\n- Several up-to-date eSIM compatibility databases list **ZTE models**, but the U59 is *not* flagged in any of them as supporting eSIM. ([esimcheck.org](https://www.esimcheck.org/?utm_source=openai))  \n- eSIM support requires specific hardware (an embedded eUICC chip) and software support. Given that the U59 isn\u2019t shown in eSIM-capable device lists, it\u2019s safe to assume it **does not** have built-in eSIM functionality. ([androidauthority.com](https://www.androidauthority.com/phone-esim-compatible-3358781/?utm_source=openai))  \n\nSo: **it likely only supports physical SIMs (mini, micro, or nano, depending on model)**\u2014no eSIM capability.\n\n---\n\n## \ud83d\udd0b Battery and Operating Without It\n\n- ZTE\u2019s documentation about their devices states that many models have **built-in (non-removable) batteries**. ([support.ztedevices.com](https://support.ztedevices.com/en-gl/can-the-built-in-battery-be-removed/?utm_source=openai))  \n- Specifically, the \u201cCan the built-in battery be removed?\u201d section says the built-in battery *cannot* be removed by the user\u2014you\u2019d need to take it to a ZTE service center. ([support.ztedevices.com](https://support.ztedevices.com/en-gl/can-the-built-in-battery-be-removed/?utm_source=openai))  \n\nSo regarding operating without battery:\n\n- If the battery is **truly built in** (non-user-removable), it\u2019s typically not safe or feasible to remove it just to run the phone on external power. The charging circuits and power management are designed with that battery in place.\n- Even with some phones that allow battery removal, running without the battery poses risks: sudden shutdowns with power loss, possibly unstable power behavior, and possible damage to the phone's power regulation hardware.\n\n---\n\n## \u2705 What You Can Do / Test\n\nTo be sure about your U59, you could try the following:\n\n1. Check its settings for anything involving \u201cAdd eSIM,\u201d \u201cDigital SIM,\u201d or \u201cMobile Plan\u201d\u2014if there\u2019s nothing, that supports the physical-SIM-only conclusion.\n\n2. Dial `*#06#` on the phone; if you see an \u201cEID\u201d number along with the IMEI, that often indicates built-in eSIM support. If only IMEI shows up, likely no eSIM. (This is a common test for Android phones) ([techradar.com](https://www.techradar.com/pro/how-to-check-if-your-phone-supports-esim?utm_source=openai))\n\n3. Inspect the phone physically: try removing the back cover (if that\u2019s possible) or checking the manual. If the battery is labeled \u201cbuilt-in\u201d or \"non-removable,\" you should assume it\u2019s not meant to be removed by you. ZTE\u2019s document confirms for many of their phones this is the case. ([support.ztedevices.com](https://support.ztedevices.com/en-gl/can-the-built-in-battery-be-removed/?utm_source=openai))\n\n4. If you tried using it without battery, **make sure it never loses power**\u2014any interruption would shut it off instantly. Not recommended for regular use unless you\u2019re okay with that risk.\n\n---\n\nIf you want, I could try to dig up the *exact* spec sheet for your specific U59 variant (region, model number) to see if there's any exception that *does* include eSIM or supports run-without-battery mode. Do you have the full model number (like ZTE U59 plus a region code)?"
    },
    {
        "role": "user",
        "content": "sorry%20the%20ZTE%20U50"
    },
    {
        "role": "assistant",
        "content": "Here\u2019s what I found on the **ZTE U50** (5G portable Wi-Fi router) to answer your two questions: whether it supports **eSIM**, and whether it works without its battery.\n\n---\n\n## Does the ZTE U50 support eSIM?\n\nThe available evidence is conflicting and uncertain.\n\n- Multiple product listings (for example, on Digitec and Galaxus) claim the ZTE U50 \u201csupports both Nano-SIM and eSIM\u201d and is suitable for eSIM profiles from providers like Holafly. ([digitec.ch](https://www.digitec.ch/en/s1/questionandanswer/is-the-zte-u50-also-suitable-for-e-sim-eg-from-holafly-829476?utm_source=openai))  \n- However, one of the product questions on Galaxus disputes that, saying \u201cD\u2019apr\u00e8s mes recherches, cet appareil ne dispose que d\u2019un slot nano-SIM, \u2026\u201d (meaning \u201cAccording to my research, this device has only a nano-SIM slot.\u201d) and indicates there might be incorrect data in some listings. ([galaxus.ch](https://www.galaxus.ch/fr/s1/questionandanswer/comment-les-saisir-esim--701868?utm_source=openai))  \n- The official manual shows only instructions for inserting a **nano-SIM** physical card. There is no mention in the spec sheet or user manual of activating or using an eSIM profile. ([manualslib.com](https://www.manualslib.com/manual/3619563/Zte-U50.html?utm_source=openai))  \n\n**Conclusion:** It is likely that the ZTE U50 **does not actually support eSIM**, and the \u201csupports eSIM\u201d notes in some listings might be errors or assumptions. From the official manual, eSIM is *not* shown as a supported option.\n\n---\n\n## Can the ZTE U50 work without its battery if it's plugged in?\n\nYes \u2014 partially, according to the official documentation.\n\n- The manual explicitly shows that the battery is \u201cinserted\u201d and plays a role in powering the device. ([manualslib.com](https://www.manualslib.com/manual/3619563/Zte-U50.html?utm_source=openai))  \n- But it also includes a note: *\u201cTo use the device without the battery installed, the device must be connected to [a power source].\u201d* This implies that if you remove the battery, you **can** make it work as long as it\u2019s plugged in. ([manualslib.com](https://www.manualslib.com/manual/3569888/Zte-U50.html?utm_source=openai))  \n\nThat said, running without a battery can lead to trade-offs:\n\n- No backup power: If the external power is interrupted (unplugged or power failure), the device will instantly shut off.\n- Potential risks with power regulation or damage if the design expects the battery to be part of the circuit (though the manual doesn\u2019t warn strongly against running it like this).\n- Possibly reduced performance or reduced battery lifespan issues due to heat or power surges (but nothing confirmed in the documentation).\n\n---\n\n## \u2705 Summary\n\n| Feature | Likelihood / Status |\n|---------|----------------------|\n| **eSIM support** | Most likely *not supported*, despite some product listings claiming \u201cNano/eSIM.\u201d Official manual shows only nano-SIM. |\n| **Operation without battery (plugged in)** | *Possible*, per manual \u2014 device can run without battery if it's connected to external power. |\n\n---\n\nIf you want, I can try tracking down the *exact model* of your ZTE U50 (region or variant) and see whether *that* one has eSIM hardware. Sometimes manufacturers reserve eSIM capability for certain markets. Do you happen to have the model variant number or where you bought it?"
    },
    {
        "role": "user",
        "content": "most%20likely%20that%20not%20the%20answer%20pick%20yes%20or%20no"
    },
    {
        "role": "assistant",
        "content": "No \u2014 most evidence suggests the **ZTE U50 does *not*** actually support eSIM."
    }
]