so i know that this is being discontinued hence is there any alternatives without changing the frequency? or atleast 1.5ghz and above frequency?
What's the first part of that sentence? What happened so that you know that?
Why do you care about the frequency? Other than that it should not be illegal in your country, I mean. I think you should care about range, power consumption, data rate. If an alternative gives you what you need, and is legal, why can't it be below 1.5GHz?
Have you tried going to the Nordic Semiconductor website and checking out the latest offerings?
difficult to recommend alternatives without knowing what is the project?
e.g. volume of traffic? is it local communications, long distance (how far?), etc etc
2.4Ghz is a useful band, little or no duty cycle restrictions and a World wide band, no need to swap frequencies depending where in the World you are.
The obvious alternative is the Semtech SX128X LoRa devices, capable of both high speed operation and being slowed down for long distance connections, 89km has been achieved.
The SX128X allows for 255 byte packets versus 32 bytes max for the NRF24 devices. Also has a ranging or distance measuring function.
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apparently there's a shortage of the chip used in nrf. and there are more and more fakes emerging in the market.
i know lora is an alternative but the amount of data one can send through it is very less
that is why im looking for alternatives
are you referring to the 52 series? i am kind of new to electronics comparitively so please guide me 
I'm not referring to any series.
Why don't you download the Nordic product guide and pick the one you like.
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thank you so much i'll try this module too.
but suppose i can trade range for cost then what would you recommend?. the only criteria is that it should be in ghz andd not mhz
You are mistaken.
The SX128X LoRa device has a throughput of 1.3Mbs and given that it allows for much larger packets, data throughput will be close to that of the NRF24. LoRa devices are fast as well as slow.
i was talking about the 800-1000mhz range.
but the one alternative you suggested is of 2.4ghz which is pretty good but the price shows around 6k. hence any other options?
The SX128x can be got one off for around £4.
Why is the application you are planning so price sensitive ?
For real cheap, the ESP32s have ESP-NOW comms for free.
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