Would these cards be good for old phones to get rid of the "no sim card" notification?

Boy, that's a loaded question. The answer is maybe. As they are shipped, they would be worthless for that application. If however you programmed them with a SIM card writer, they would work great. There are plenty of 99 cent sim cards available (from various carriers) on Amazon and elsewhere, so i don't know why you would bother with these.

Can i use this as a fake sim card?

Not quite sure what you mean by "fake", but i guess so, since these are real SIM cards that are blank. They can be written with whatever information you want. If you are interested in duplicating an existing SIM card, you will need one of these to get the job done.

can I clone my att cdma micro sim to this?

No , You can't . Because these blank SIM cards is compatible: 4G FDD LTE WCDMA GSM

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XCRFID Writable Programmable Blank SIM USIM Card 4G LTE WCDMA GSM Nano Micro SIM Card 2FF 3FF 4FF for Telecom Operator by (10pcs)

XCRFID Writable Programmable Blank SIM USIM Card 4G LTE WCDMA GSM Nano Micro SIM Card 2FF 3FF 4FF for Telecom Operator by (10pcs)

Product ID: 499370139

Details

Brand
XCRFID
Cellular technology
LTE
Number of items
10
Service provider
Gialer
UPC
612289267847

💻Writable & Programmable

📏3-in-1 SIM sizes

📶4G LTE support

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₨24396

Duties & taxes included

In stock

Sold byAmazon Sri LankaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

📱 Elevate Your Connectivity Game!

EXPERT ONLY USE - Crafted for those in the know—engineered for professional applications.
UNLOCK YOUR POTENTIAL - Transform this blank SIM into your personalized telecom solution.
VERSATILE COMPATIBILITY - Seamlessly integrates with 4G FDD LTE, WCDMA, and GSM networks.
MULTIPLE SIZES ONE CARD - Includes Standard, Micro, and Nano SIM formats for ultimate flexibility.
TAILORED FOR PROFESSIONALS - Designed for telecom operators, ensuring top-tier performance.

The XCRFID Writable Programmable Blank SIM Card is a versatile telecom solution designed for professionals. This pack of 10 cards supports 4G LTE, WCDMA, and GSM networks and comes in three sizes: Standard, Micro, and Nano. Ideal for telecommunications operators, these blank SIM cards require programming, making them perfect for those with technical expertise.

Specifications

ASIN	B07F5DVZR2
Best Sellers Rank	1,626 in Mobile Phone SIM Card Tools & Accessories
Brand Name	XCRFID
Cellular Technology	LTE
Manufacturer	XCRFID
Number of Items	10
Service Provider	Gialer
UPC	612289267847

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